diff --git a/change/react-native-windows-2020-06-25-01-58-53-pgWin32WinUI3.json b/change/react-native-windows-2020-06-25-01-58-53-pgWin32WinUI3.json
new file mode 100644
index 00000000000..b342e7a869c
--- /dev/null
+++ b/change/react-native-windows-2020-06-25-01-58-53-pgWin32WinUI3.json
@@ -0,0 +1,8 @@
+{
+  "type": "prerelease",
+  "comment": "WinUI 3 islands support",
+  "packageName": "react-native-windows",
+  "email": "asklar@microsoft.com",
+  "dependentChangeType": "patch",
+  "date": "2020-06-25T08:58:53.669Z"
+}
diff --git a/packages/playground/windows/NuGet.Config b/packages/playground/windows/NuGet.Config
new file mode 100644
index 00000000000..8a7dab4d15f
--- /dev/null
+++ b/packages/playground/windows/NuGet.Config
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <config>
+    <add key="repositoryPath" value="packages" />
+  </config>
+  <packageSources>
+    <add key="Nuget.org" value="https://api.nuget.org/v3/index.json" />
+    <add key="localPackage" value="C:\temp\3.0.0-development.200706.1-CI" />
+  </packageSources>
+
+</configuration>
diff --git a/packages/playground/windows/Playground-win32 (Package)/Images/LockScreenLogo.scale-200.png b/packages/playground/windows/Playground-win32 (Package)/Images/LockScreenLogo.scale-200.png
new file mode 100644
index 00000000000..735f57adb5d
Binary files /dev/null and b/packages/playground/windows/Playground-win32 (Package)/Images/LockScreenLogo.scale-200.png differ
diff --git a/packages/playground/windows/Playground-win32 (Package)/Images/SplashScreen.scale-200.png b/packages/playground/windows/Playground-win32 (Package)/Images/SplashScreen.scale-200.png
new file mode 100644
index 00000000000..023e7f1feda
Binary files /dev/null and b/packages/playground/windows/Playground-win32 (Package)/Images/SplashScreen.scale-200.png differ
diff --git a/packages/playground/windows/Playground-win32 (Package)/Images/Square150x150Logo.scale-200.png b/packages/playground/windows/Playground-win32 (Package)/Images/Square150x150Logo.scale-200.png
new file mode 100644
index 00000000000..af49fec1a54
Binary files /dev/null and b/packages/playground/windows/Playground-win32 (Package)/Images/Square150x150Logo.scale-200.png differ
diff --git a/packages/playground/windows/Playground-win32 (Package)/Images/Square44x44Logo.scale-200.png b/packages/playground/windows/Playground-win32 (Package)/Images/Square44x44Logo.scale-200.png
new file mode 100644
index 00000000000..ce342a2ec8a
Binary files /dev/null and b/packages/playground/windows/Playground-win32 (Package)/Images/Square44x44Logo.scale-200.png differ
diff --git a/packages/playground/windows/Playground-win32 (Package)/Images/Square44x44Logo.targetsize-24_altform-unplated.png b/packages/playground/windows/Playground-win32 (Package)/Images/Square44x44Logo.targetsize-24_altform-unplated.png
new file mode 100644
index 00000000000..f6c02ce97e0
Binary files /dev/null and b/packages/playground/windows/Playground-win32 (Package)/Images/Square44x44Logo.targetsize-24_altform-unplated.png differ
diff --git a/packages/playground/windows/Playground-win32 (Package)/Images/StoreLogo.png b/packages/playground/windows/Playground-win32 (Package)/Images/StoreLogo.png
new file mode 100644
index 00000000000..7385b56c0e4
Binary files /dev/null and b/packages/playground/windows/Playground-win32 (Package)/Images/StoreLogo.png differ
diff --git a/packages/playground/windows/Playground-win32 (Package)/Images/Wide310x150Logo.scale-200.png b/packages/playground/windows/Playground-win32 (Package)/Images/Wide310x150Logo.scale-200.png
new file mode 100644
index 00000000000..288995b397f
Binary files /dev/null and b/packages/playground/windows/Playground-win32 (Package)/Images/Wide310x150Logo.scale-200.png differ
diff --git a/packages/playground/windows/Playground-win32 (Package)/Package.appxmanifest b/packages/playground/windows/Playground-win32 (Package)/Package.appxmanifest
new file mode 100644
index 00000000000..d0507079eb6
--- /dev/null
+++ b/packages/playground/windows/Playground-win32 (Package)/Package.appxmanifest	
@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<Package
+  xmlns="http://schemas.microsoft.com/appx/manifest/foundation/windows10"
+  xmlns:uap="http://schemas.microsoft.com/appx/manifest/uap/windows10"
+  xmlns:rescap="http://schemas.microsoft.com/appx/manifest/foundation/windows10/restrictedcapabilities"
+  IgnorableNamespaces="uap rescap">
+
+  <Identity
+    Name="RNPlayground-Win32"
+    Publisher="CN=asklar"
+    Version="1.0.0.0" />
+
+  <Properties>
+    <DisplayName>Playground-win32 (Package)</DisplayName>
+    <PublisherDisplayName>asklar</PublisherDisplayName>
+    <Logo>Images\StoreLogo.png</Logo>
+  </Properties>
+
+  <Dependencies>
+    <TargetDeviceFamily Name="Windows.Universal" MinVersion="10.0.0.0" MaxVersionTested="10.0.0.0" />
+    <TargetDeviceFamily Name="Windows.Desktop" MinVersion="10.0.14393.0" MaxVersionTested="10.0.14393.0" />
+  </Dependencies>
+
+  <Resources>
+    <Resource Language="x-generate"/>
+  </Resources>
+
+  <Applications>
+    <Application Id="App"
+      Executable="$targetnametoken$.exe"
+      EntryPoint="$targetentrypoint$">
+      <uap:VisualElements
+        DisplayName="Playground-win32 (Package)"
+        Description="Playground-win32 (Package)"
+        BackgroundColor="transparent"
+        Square150x150Logo="Images\Square150x150Logo.png"
+        Square44x44Logo="Images\Square44x44Logo.png">
+        <uap:DefaultTile Wide310x150Logo="Images\Wide310x150Logo.png" />
+        <uap:SplashScreen Image="Images\SplashScreen.png" />
+      </uap:VisualElements>
+    </Application>
+  </Applications>
+
+  <Capabilities>
+    <Capability Name="internetClient" />
+    <rescap:Capability Name="runFullTrust" />
+  </Capabilities>
+</Package>
diff --git a/packages/playground/windows/Playground-win32 (Package)/Playground-win32 (Package).wapproj b/packages/playground/windows/Playground-win32 (Package)/Playground-win32 (Package).wapproj
new file mode 100644
index 00000000000..4491d2a8d72
--- /dev/null
+++ b/packages/playground/windows/Playground-win32 (Package)/Playground-win32 (Package).wapproj	
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="15.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <ProjectGuid>eec4ef0f-3dd6-4d36-84d8-e5ec3f5ed5ff</ProjectGuid>
+  </PropertyGroup>
+  <PropertyGroup>
+    <EntryPointProjectUniqueName>..\Playground-win32\Playground-win32.vcxproj</EntryPointProjectUniqueName>
+  </PropertyGroup>
+  <!-- VS 16.7 is the first version of VS that enables WinUI 3 packaged apps / desktop bridge
+  However 16.7 is still in Preview so it's not available in GitHub Actions -->
+  <Import Project="VisualStudioVersion_MustBe_16.7.0_ButIts_$(MSBuildVersion)" Condition="'$(MSBuildVersion)'!='16.7.0'" />
+  <Import Project="Playground-win32-packaging.proj" Condition="'$(MSBuildVersion)'=='16.7.0'" />
+</Project>
diff --git a/packages/playground/windows/Playground-win32 (Package)/Playground-win32-packaging.proj b/packages/playground/windows/Playground-win32 (Package)/Playground-win32-packaging.proj
new file mode 100644
index 00000000000..93bc1e2666d
--- /dev/null
+++ b/packages/playground/windows/Playground-win32 (Package)/Playground-win32-packaging.proj	
@@ -0,0 +1,68 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="15.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '' or '$(VisualStudioVersion)' &lt; '15.0'">
+    <VisualStudioVersion>15.0</VisualStudioVersion>
+  </PropertyGroup>
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|x86">
+      <Configuration>Debug</Configuration>
+      <Platform>x86</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x86">
+      <Configuration>Release</Configuration>
+      <Platform>x86</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup>
+    <WapProjPath Condition="'$(WapProjPath)'==''">$(MSBuildExtensionsPath)\Microsoft\DesktopBridge\</WapProjPath>
+    <DebuggerType>NativeOnly</DebuggerType>
+    <BackgroundTaskDebugEngines>NativeOnly</BackgroundTaskDebugEngines>
+  </PropertyGroup>
+  <Import Project="$(WapProjPath)\Microsoft.DesktopBridge.props" />
+  <PropertyGroup>
+    <ProjectGuid>eec4ef0f-3dd6-4d36-84d8-e5ec3f5ed5ff</ProjectGuid>
+    <TargetPlatformVersion>10.0.18362.0</TargetPlatformVersion>
+    <TargetPlatformMinVersion>10.0.17134.0</TargetPlatformMinVersion>
+    <DefaultLanguage>en-US</DefaultLanguage>
+    <AppxPackageSigningEnabled>false</AppxPackageSigningEnabled>
+    <EntryPointProjectUniqueName>..\Playground-win32\Playground-win32.vcxproj</EntryPointProjectUniqueName>
+  </PropertyGroup>
+  <ItemGroup>
+    <AppxManifest Include="Package.appxmanifest">
+      <SubType>Designer</SubType>
+    </AppxManifest>
+  </ItemGroup>
+  <ItemGroup>
+    <Content Include="Images\SplashScreen.scale-200.png" />
+    <Content Include="Images\LockScreenLogo.scale-200.png" />
+    <Content Include="Images\Square150x150Logo.scale-200.png" />
+    <Content Include="Images\Square44x44Logo.scale-200.png" />
+    <Content Include="Images\Square44x44Logo.targetsize-24_altform-unplated.png" />
+    <Content Include="Images\StoreLogo.png" />
+    <Content Include="Images\Wide310x150Logo.scale-200.png" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\Playground-win32\Playground-win32.vcxproj">
+      <SkipGetTargetFrameworkProperties>True</SkipGetTargetFrameworkProperties>
+    </ProjectReference>
+  </ItemGroup>
+  <ItemGroup>
+    <SDKReference Include="Microsoft.VCLibs.Desktop, Version=14.0" />
+    <!-- Needed for ucrtbased.dll when running a debug build. -->
+    <SDKReference Include="Microsoft.VCLibs, Version=14.0" Condition="'$(Configuration)' == 'Debug'" />
+  </ItemGroup>
+  <PropertyGroup>
+    <UseWinUI3>true</UseWinUI3>
+  </PropertyGroup>
+  <Import Project="..\..\..\..\vnext\PropertySheets\WinUI.props" />
+  <Import Project="$(WapProjPath)\Microsoft.DesktopBridge.targets" />
+  <Import Project="..\packages\$(WinUIPackageName).$(WinUI3Version)\build\Microsoft.WinUI.AppX.targets" />
+</Project>
diff --git a/packages/playground/windows/playground-win32-packaged.sln b/packages/playground/windows/playground-win32-packaged.sln
new file mode 100644
index 00000000000..dc4923da27f
--- /dev/null
+++ b/packages/playground/windows/playground-win32-packaged.sln
@@ -0,0 +1,139 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
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+VisualStudioVersion = 16.0.29102.190
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Playground-win32", "playground-win32\Playground-Win32.vcxproj", "{8B88FFAE-4DBC-49A2-AFA5-D2477D4AD189}"
+EndProject
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+EndProject
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+	ProjectSection(ProjectDependencies) = postProject
+		{A990658C-CE31-4BCC-976F-0FC6B1AF693D} = {A990658C-CE31-4BCC-976F-0FC6B1AF693D}
+	EndProjectSection
+EndProject
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+EndProject
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+EndProject
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+EndProject
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+EndProject
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+EndProject
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+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "ReactNative", "ReactNative", "{5EA20F54-880A-49F3-99FA-4B3FE54E8AB1}"
+EndProject
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+EndProject
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+EndProject
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+EndProject
+Global
+	GlobalSection(SharedMSBuildProjectFiles) = preSolution
+		..\..\..\vnext\JSI\Shared\JSI.Shared.vcxitems*{0cc28589-39e4-4288-b162-97b959f8b843}*SharedItemsImports = 9
+		..\..\..\vnext\Shared\Shared.vcxitems*{2049dbe9-8d13-42c9-ae4b-413ae38fffd0}*SharedItemsImports = 9
+		..\..\..\vnext\Mso\Mso.vcxitems*{84e05bfa-cbaf-4f0d-bfb6-4ce85742a57e}*SharedItemsImports = 9
+		..\..\..\vnext\JSI\Shared\JSI.Shared.vcxitems*{a62d504a-16b8-41d2-9f19-e2e86019e5e4}*SharedItemsImports = 4
+		..\..\..\vnext\Chakra\Chakra.vcxitems*{c38970c0-5fbf-4d69-90d8-cbac225ae895}*SharedItemsImports = 9
+		..\..\..\vnext\Microsoft.ReactNative.Cxx\Microsoft.ReactNative.Cxx.vcxitems*{da8b35b3-da00-4b02-bde6-6a397b3fd46b}*SharedItemsImports = 9
+		..\..\..\vnext\Chakra\Chakra.vcxitems*{f7d32bd0-2749-483e-9a0d-1635ef7e3136}*SharedItemsImports = 4
+		..\..\..\vnext\JSI\Shared\JSI.Shared.vcxitems*{f7d32bd0-2749-483e-9a0d-1635ef7e3136}*SharedItemsImports = 4
+		..\..\..\vnext\Microsoft.ReactNative.Cxx\Microsoft.ReactNative.Cxx.vcxitems*{f7d32bd0-2749-483e-9a0d-1635ef7e3136}*SharedItemsImports = 4
+		..\..\..\vnext\Mso\Mso.vcxitems*{f7d32bd0-2749-483e-9a0d-1635ef7e3136}*SharedItemsImports = 4
+		..\..\..\vnext\Shared\Shared.vcxitems*{f7d32bd0-2749-483e-9a0d-1635ef7e3136}*SharedItemsImports = 4
+	EndGlobalSection
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
+	EndGlobalSection
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+		{FCA38F3C-7C73-4C47-BE4E-32F77FA8538D}.Debug|x86.Build.0 = Debug|Win32
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+		{FCA38F3C-7C73-4C47-BE4E-32F77FA8538D}.Release|x64.Build.0 = Release|x64
+		{FCA38F3C-7C73-4C47-BE4E-32F77FA8538D}.Release|x86.ActiveCfg = Release|Win32
+		{FCA38F3C-7C73-4C47-BE4E-32F77FA8538D}.Release|x86.Build.0 = Release|Win32
+		{EEC4EF0F-3DD6-4D36-84D8-E5EC3F5ED5FF}.Debug|x64.ActiveCfg = Debug|x64
+		{EEC4EF0F-3DD6-4D36-84D8-E5EC3F5ED5FF}.Debug|x64.Build.0 = Debug|x64
+		{EEC4EF0F-3DD6-4D36-84D8-E5EC3F5ED5FF}.Debug|x64.Deploy.0 = Debug|x64
+		{EEC4EF0F-3DD6-4D36-84D8-E5EC3F5ED5FF}.Debug|x86.ActiveCfg = Debug|x86
+		{EEC4EF0F-3DD6-4D36-84D8-E5EC3F5ED5FF}.Debug|x86.Build.0 = Debug|x86
+		{EEC4EF0F-3DD6-4D36-84D8-E5EC3F5ED5FF}.Debug|x86.Deploy.0 = Debug|x86
+		{EEC4EF0F-3DD6-4D36-84D8-E5EC3F5ED5FF}.Release|x64.ActiveCfg = Release|x64
+		{EEC4EF0F-3DD6-4D36-84D8-E5EC3F5ED5FF}.Release|x64.Build.0 = Release|x64
+		{EEC4EF0F-3DD6-4D36-84D8-E5EC3F5ED5FF}.Release|x64.Deploy.0 = Release|x64
+		{EEC4EF0F-3DD6-4D36-84D8-E5EC3F5ED5FF}.Release|x86.ActiveCfg = Release|x86
+		{EEC4EF0F-3DD6-4D36-84D8-E5EC3F5ED5FF}.Release|x86.Build.0 = Release|x86
+		{EEC4EF0F-3DD6-4D36-84D8-E5EC3F5ED5FF}.Release|x86.Deploy.0 = Release|x86
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(NestedProjects) = preSolution
+		{A990658C-CE31-4BCC-976F-0FC6B1AF693D} = {5EA20F54-880A-49F3-99FA-4B3FE54E8AB1}
+		{A9D95A91-4DB7-4F72-BEB6-FE8A5C89BFBD} = {5EA20F54-880A-49F3-99FA-4B3FE54E8AB1}
+		{C38970C0-5FBF-4D69-90D8-CBAC225AE895} = {5EA20F54-880A-49F3-99FA-4B3FE54E8AB1}
+		{F7D32BD0-2749-483E-9A0D-1635EF7E3136} = {5EA20F54-880A-49F3-99FA-4B3FE54E8AB1}
+		{0CC28589-39E4-4288-B162-97B959F8B843} = {5EA20F54-880A-49F3-99FA-4B3FE54E8AB1}
+		{A62D504A-16B8-41D2-9F19-E2E86019E5E4} = {5EA20F54-880A-49F3-99FA-4B3FE54E8AB1}
+		{DA8B35B3-DA00-4B02-BDE6-6A397B3FD46B} = {5EA20F54-880A-49F3-99FA-4B3FE54E8AB1}
+		{FCA38F3C-7C73-4C47-BE4E-32F77FA8538D} = {5EA20F54-880A-49F3-99FA-4B3FE54E8AB1}
+		{2049DBE9-8D13-42C9-AE4B-413AE38FFFD0} = {5EA20F54-880A-49F3-99FA-4B3FE54E8AB1}
+		{84E05BFA-CBAF-4F0D-BFB6-4CE85742A57E} = {5EA20F54-880A-49F3-99FA-4B3FE54E8AB1}
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {F5EAF3BA-6B6F-4E81-B5C6-49B30EC0A32E}
+	EndGlobalSection
+EndGlobal
diff --git a/packages/playground/windows/playground-win32.sln b/packages/playground/windows/playground-win32.sln
index 17b51fe1d0b..cb5ea341f1b 100644
--- a/packages/playground/windows/playground-win32.sln
+++ b/packages/playground/windows/playground-win32.sln
@@ -3,7 +3,7 @@ Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio Version 16
 VisualStudioVersion = 16.0.29102.190
 MinimumVisualStudioVersion = 10.0.40219.1
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Playground-Win32", "playground-win32\Playground-Win32.vcxproj", "{8B88FFAE-4DBC-49A2-AFA5-D2477D4AD189}"
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Playground-win32", "playground-win32\Playground-Win32.vcxproj", "{8B88FFAE-4DBC-49A2-AFA5-D2477D4AD189}"
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Folly", "..\..\..\vnext\Folly\Folly.vcxproj", "{A990658C-CE31-4BCC-976F-0FC6B1AF693D}"
 EndProject
@@ -45,88 +45,60 @@ Global
 		..\..\..\vnext\Shared\Shared.vcxitems*{f7d32bd0-2749-483e-9a0d-1635ef7e3136}*SharedItemsImports = 4
 	EndGlobalSection
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
-		Debug|ARM = Debug|ARM
 		Debug|x64 = Debug|x64
 		Debug|x86 = Debug|x86
-		Release|ARM = Release|ARM
 		Release|x64 = Release|x64
 		Release|x86 = Release|x86
 	EndGlobalSection
 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
-		{8B88FFAE-4DBC-49A2-AFA5-D2477D4AD189}.Debug|ARM.ActiveCfg = Debug|ARM
-		{8B88FFAE-4DBC-49A2-AFA5-D2477D4AD189}.Debug|ARM.Build.0 = Debug|ARM
-		{8B88FFAE-4DBC-49A2-AFA5-D2477D4AD189}.Debug|ARM.Deploy.0 = Debug|ARM
 		{8B88FFAE-4DBC-49A2-AFA5-D2477D4AD189}.Debug|x64.ActiveCfg = Debug|x64
 		{8B88FFAE-4DBC-49A2-AFA5-D2477D4AD189}.Debug|x64.Build.0 = Debug|x64
 		{8B88FFAE-4DBC-49A2-AFA5-D2477D4AD189}.Debug|x64.Deploy.0 = Debug|x64
 		{8B88FFAE-4DBC-49A2-AFA5-D2477D4AD189}.Debug|x86.ActiveCfg = Debug|Win32
 		{8B88FFAE-4DBC-49A2-AFA5-D2477D4AD189}.Debug|x86.Build.0 = Debug|Win32
 		{8B88FFAE-4DBC-49A2-AFA5-D2477D4AD189}.Debug|x86.Deploy.0 = Debug|Win32
-		{8B88FFAE-4DBC-49A2-AFA5-D2477D4AD189}.Release|ARM.ActiveCfg = Release|ARM
-		{8B88FFAE-4DBC-49A2-AFA5-D2477D4AD189}.Release|ARM.Build.0 = Release|ARM
-		{8B88FFAE-4DBC-49A2-AFA5-D2477D4AD189}.Release|ARM.Deploy.0 = Release|ARM
 		{8B88FFAE-4DBC-49A2-AFA5-D2477D4AD189}.Release|x64.ActiveCfg = Release|x64
 		{8B88FFAE-4DBC-49A2-AFA5-D2477D4AD189}.Release|x64.Build.0 = Release|x64
 		{8B88FFAE-4DBC-49A2-AFA5-D2477D4AD189}.Release|x64.Deploy.0 = Release|x64
 		{8B88FFAE-4DBC-49A2-AFA5-D2477D4AD189}.Release|x86.ActiveCfg = Release|Win32
 		{8B88FFAE-4DBC-49A2-AFA5-D2477D4AD189}.Release|x86.Build.0 = Release|Win32
 		{8B88FFAE-4DBC-49A2-AFA5-D2477D4AD189}.Release|x86.Deploy.0 = Release|Win32
-		{A990658C-CE31-4BCC-976F-0FC6B1AF693D}.Debug|ARM.ActiveCfg = Debug|ARM
-		{A990658C-CE31-4BCC-976F-0FC6B1AF693D}.Debug|ARM.Build.0 = Debug|ARM
 		{A990658C-CE31-4BCC-976F-0FC6B1AF693D}.Debug|x64.ActiveCfg = Debug|x64
 		{A990658C-CE31-4BCC-976F-0FC6B1AF693D}.Debug|x64.Build.0 = Debug|x64
 		{A990658C-CE31-4BCC-976F-0FC6B1AF693D}.Debug|x86.ActiveCfg = Debug|Win32
 		{A990658C-CE31-4BCC-976F-0FC6B1AF693D}.Debug|x86.Build.0 = Debug|Win32
-		{A990658C-CE31-4BCC-976F-0FC6B1AF693D}.Release|ARM.ActiveCfg = Release|ARM
-		{A990658C-CE31-4BCC-976F-0FC6B1AF693D}.Release|ARM.Build.0 = Release|ARM
 		{A990658C-CE31-4BCC-976F-0FC6B1AF693D}.Release|x64.ActiveCfg = Release|x64
 		{A990658C-CE31-4BCC-976F-0FC6B1AF693D}.Release|x64.Build.0 = Release|x64
 		{A990658C-CE31-4BCC-976F-0FC6B1AF693D}.Release|x86.ActiveCfg = Release|Win32
 		{A990658C-CE31-4BCC-976F-0FC6B1AF693D}.Release|x86.Build.0 = Release|Win32
-		{A9D95A91-4DB7-4F72-BEB6-FE8A5C89BFBD}.Debug|ARM.ActiveCfg = Debug|ARM
-		{A9D95A91-4DB7-4F72-BEB6-FE8A5C89BFBD}.Debug|ARM.Build.0 = Debug|ARM
 		{A9D95A91-4DB7-4F72-BEB6-FE8A5C89BFBD}.Debug|x64.ActiveCfg = Debug|x64
 		{A9D95A91-4DB7-4F72-BEB6-FE8A5C89BFBD}.Debug|x64.Build.0 = Debug|x64
 		{A9D95A91-4DB7-4F72-BEB6-FE8A5C89BFBD}.Debug|x86.ActiveCfg = Debug|Win32
 		{A9D95A91-4DB7-4F72-BEB6-FE8A5C89BFBD}.Debug|x86.Build.0 = Debug|Win32
-		{A9D95A91-4DB7-4F72-BEB6-FE8A5C89BFBD}.Release|ARM.ActiveCfg = Release|ARM
-		{A9D95A91-4DB7-4F72-BEB6-FE8A5C89BFBD}.Release|ARM.Build.0 = Release|ARM
 		{A9D95A91-4DB7-4F72-BEB6-FE8A5C89BFBD}.Release|x64.ActiveCfg = Release|x64
 		{A9D95A91-4DB7-4F72-BEB6-FE8A5C89BFBD}.Release|x64.Build.0 = Release|x64
 		{A9D95A91-4DB7-4F72-BEB6-FE8A5C89BFBD}.Release|x86.ActiveCfg = Release|Win32
 		{A9D95A91-4DB7-4F72-BEB6-FE8A5C89BFBD}.Release|x86.Build.0 = Release|Win32
-		{F7D32BD0-2749-483E-9A0D-1635EF7E3136}.Debug|ARM.ActiveCfg = Debug|ARM
-		{F7D32BD0-2749-483E-9A0D-1635EF7E3136}.Debug|ARM.Build.0 = Debug|ARM
 		{F7D32BD0-2749-483E-9A0D-1635EF7E3136}.Debug|x64.ActiveCfg = Debug|x64
 		{F7D32BD0-2749-483E-9A0D-1635EF7E3136}.Debug|x64.Build.0 = Debug|x64
 		{F7D32BD0-2749-483E-9A0D-1635EF7E3136}.Debug|x86.ActiveCfg = Debug|Win32
 		{F7D32BD0-2749-483E-9A0D-1635EF7E3136}.Debug|x86.Build.0 = Debug|Win32
-		{F7D32BD0-2749-483E-9A0D-1635EF7E3136}.Release|ARM.ActiveCfg = Release|ARM
-		{F7D32BD0-2749-483E-9A0D-1635EF7E3136}.Release|ARM.Build.0 = Release|ARM
 		{F7D32BD0-2749-483E-9A0D-1635EF7E3136}.Release|x64.ActiveCfg = Release|x64
 		{F7D32BD0-2749-483E-9A0D-1635EF7E3136}.Release|x64.Build.0 = Release|x64
 		{F7D32BD0-2749-483E-9A0D-1635EF7E3136}.Release|x86.ActiveCfg = Release|Win32
 		{F7D32BD0-2749-483E-9A0D-1635EF7E3136}.Release|x86.Build.0 = Release|Win32
-		{A62D504A-16B8-41D2-9F19-E2E86019E5E4}.Debug|ARM.ActiveCfg = Debug|ARM
-		{A62D504A-16B8-41D2-9F19-E2E86019E5E4}.Debug|ARM.Build.0 = Debug|ARM
 		{A62D504A-16B8-41D2-9F19-E2E86019E5E4}.Debug|x64.ActiveCfg = Debug|x64
 		{A62D504A-16B8-41D2-9F19-E2E86019E5E4}.Debug|x64.Build.0 = Debug|x64
 		{A62D504A-16B8-41D2-9F19-E2E86019E5E4}.Debug|x86.ActiveCfg = Debug|Win32
 		{A62D504A-16B8-41D2-9F19-E2E86019E5E4}.Debug|x86.Build.0 = Debug|Win32
-		{A62D504A-16B8-41D2-9F19-E2E86019E5E4}.Release|ARM.ActiveCfg = Release|ARM
-		{A62D504A-16B8-41D2-9F19-E2E86019E5E4}.Release|ARM.Build.0 = Release|ARM
 		{A62D504A-16B8-41D2-9F19-E2E86019E5E4}.Release|x64.ActiveCfg = Release|x64
 		{A62D504A-16B8-41D2-9F19-E2E86019E5E4}.Release|x64.Build.0 = Release|x64
 		{A62D504A-16B8-41D2-9F19-E2E86019E5E4}.Release|x86.ActiveCfg = Release|Win32
 		{A62D504A-16B8-41D2-9F19-E2E86019E5E4}.Release|x86.Build.0 = Release|Win32
-		{FCA38F3C-7C73-4C47-BE4E-32F77FA8538D}.Debug|ARM.ActiveCfg = Debug|ARM
-		{FCA38F3C-7C73-4C47-BE4E-32F77FA8538D}.Debug|ARM.Build.0 = Debug|ARM
 		{FCA38F3C-7C73-4C47-BE4E-32F77FA8538D}.Debug|x64.ActiveCfg = Debug|x64
 		{FCA38F3C-7C73-4C47-BE4E-32F77FA8538D}.Debug|x64.Build.0 = Debug|x64
 		{FCA38F3C-7C73-4C47-BE4E-32F77FA8538D}.Debug|x86.ActiveCfg = Debug|Win32
 		{FCA38F3C-7C73-4C47-BE4E-32F77FA8538D}.Debug|x86.Build.0 = Debug|Win32
-		{FCA38F3C-7C73-4C47-BE4E-32F77FA8538D}.Release|ARM.ActiveCfg = Release|ARM
-		{FCA38F3C-7C73-4C47-BE4E-32F77FA8538D}.Release|ARM.Build.0 = Release|ARM
 		{FCA38F3C-7C73-4C47-BE4E-32F77FA8538D}.Release|x64.ActiveCfg = Release|x64
 		{FCA38F3C-7C73-4C47-BE4E-32F77FA8538D}.Release|x64.Build.0 = Release|x64
 		{FCA38F3C-7C73-4C47-BE4E-32F77FA8538D}.Release|x86.ActiveCfg = Release|Win32
diff --git a/packages/playground/windows/playground-win32/Playground-Win32.cpp b/packages/playground/windows/playground-win32/Playground-Win32.cpp
index 1aa0a0b9b9f..e3d8f7c127e 100644
--- a/packages/playground/windows/playground-win32/Playground-Win32.cpp
+++ b/packages/playground/windows/playground-win32/Playground-Win32.cpp
@@ -1,6 +1,8 @@
 #include "pch.h"
 #include "resource.h"
 
+#include <UI.Xaml.Hosting.DesktopWindowXamlSource.h>
+
 #include <shlobj.h>
 #include <shobjidl.h>
 #include <windows.h>
@@ -14,17 +16,20 @@
 
 #include <winrt/Microsoft.ReactNative.h>
 
-#include <Windows.UI.Xaml.Hosting.DesktopWindowXamlSource.h>
-
+#include <UI.Xaml.Controls.h>
+#include <UI.Xaml.Hosting.h>
 #include <winrt/Windows.Foundation.Collections.h>
-#include <winrt/Windows.UI.Xaml.Controls.h>
-#include <winrt/Windows.UI.Xaml.Hosting.h>
 
 #pragma pop_macro("GetCurrentTime")
 
-namespace WUX = winrt::Windows::UI::Xaml;
-namespace WUXC = WUX::Controls;
-namespace WUXH = WUX::Hosting;
+#ifndef USE_WINUI3
+namespace xaml = winrt::Windows::UI::Xaml;
+#else
+namespace xaml = winrt::Microsoft::UI::Xaml;
+#endif
+
+namespace controls = xaml::Controls;
+namespace hosting = xaml::Hosting;
 
 int RunPlayground(int showCmd, bool useWebDebugger);
 
@@ -33,7 +38,7 @@ struct WindowData {
   static constexpr uint16_t defaultDebuggerPort = 9229;
 
   std::wstring m_bundleFile;
-  WUXH::DesktopWindowXamlSource m_desktopWindowXamlSource;
+  hosting::DesktopWindowXamlSource m_desktopWindowXamlSource;
 
   winrt::Microsoft::ReactNative::ReactRootView m_reactRootView;
   winrt::Microsoft::ReactNative::ReactNativeHost m_host;
@@ -46,7 +51,7 @@ struct WindowData {
   bool m_breakOnNextLine{false};
   uint16_t m_debuggerPort{defaultDebuggerPort};
 
-  WindowData(const WUXH::DesktopWindowXamlSource &desktopWindowXamlSource)
+  WindowData(const hosting::DesktopWindowXamlSource &desktopWindowXamlSource)
       : m_desktopWindowXamlSource(desktopWindowXamlSource) {}
 
   static WindowData *GetFromWindow(HWND hwnd) {
@@ -92,7 +97,7 @@ struct WindowData {
           host.InstanceSettings().DebuggerPort(m_debuggerPort);
           host.InstanceSettings().UseDeveloperSupport(true);
 
-          auto rootElement = m_desktopWindowXamlSource.Content().as<WUXC::Panel>();
+          auto rootElement = m_desktopWindowXamlSource.Content().as<controls::Panel>();
           winrt::Microsoft::ReactNative::XamlUIService::SetXamlRoot(
               host.InstanceSettings().Properties(), rootElement.XamlRoot());
 
@@ -336,11 +341,11 @@ int RunPlayground(int showCmd, bool useWebDebugger) {
 
   winrt::init_apartment(winrt::apartment_type::single_threaded);
 
-  WUXH::DesktopWindowXamlSource desktopXamlSource;
+  hosting::DesktopWindowXamlSource desktopXamlSource;
   auto windowData = std::make_unique<WindowData>(desktopXamlSource);
   windowData->m_useWebDebugger = useWebDebugger;
 
-  auto xamlContent = WUXC::Grid();
+  auto xamlContent = controls::Grid();
   desktopXamlSource.Content(xamlContent);
 
   HWND hwnd = CreateWindow(
diff --git a/packages/playground/windows/playground-win32/Playground-Win32.h b/packages/playground/windows/playground-win32/Playground-Win32.h
new file mode 100644
index 00000000000..e37271e3928
--- /dev/null
+++ b/packages/playground/windows/playground-win32/Playground-Win32.h
@@ -0,0 +1,3 @@
+#pragma once
+
+int __stdcall WinMain(HINSTANCE instance, HINSTANCE, PSTR, int showCmd);
diff --git a/packages/playground/windows/playground-win32/Playground-win32.vcxproj b/packages/playground/windows/playground-win32/Playground-win32.vcxproj
index e2b7040f426..afcac25a0ee 100644
--- a/packages/playground/windows/playground-win32/Playground-win32.vcxproj
+++ b/packages/playground/windows/playground-win32/Playground-win32.vcxproj
@@ -10,6 +10,18 @@
     <WindowsTargetPlatformMinVersion>10.0.18362.0</WindowsTargetPlatformMinVersion>
     <WindowsTargetPlatformVersion>10.0.18362.0</WindowsTargetPlatformVersion>
     <BuildMSRNCxx>false</BuildMSRNCxx>
+    <RunAutolinkCheck>false</RunAutolinkCheck>
+  </PropertyGroup>
+  <PropertyGroup Label="FromWinUI3_VSIX" Condition="'$(UseWinUI3)'=='true'">
+    <ProjectName>Playground-win32</ProjectName>
+    <DefaultLanguage>en-US</DefaultLanguage>
+    <MinimumVisualStudioVersion>16.0</MinimumVisualStudioVersion>
+    <AppContainerApplication>false</AppContainerApplication>
+    <AppxPackage>false</AppxPackage>
+    <ApplicationType>Windows Store</ApplicationType>
+    <ApplicationTypeRevision>10.0</ApplicationTypeRevision>
+    <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
+    <WindowsTargetPlatformMinVersion>10.0.17134.0</WindowsTargetPlatformMinVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Label="ReactNativeWindowsProps">
@@ -63,6 +75,7 @@
   <ImportGroup Label="ReactNativeWindowsPropertySheets">
     <Import Project="$(ReactNativeWindowsDir)\PropertySheets\External\Microsoft.ReactNative.Uwp.CppApp.props" />
   </ImportGroup>
+   <Import Project="..\packages\$(WinUIPackageProps)" Condition="'$(WinUIPackageProps)'!='' And Exists('..\packages\$(WinUIPackageProps)')" />
   <PropertyGroup>
     <AppxPackageSigningEnabled>False</AppxPackageSigningEnabled>
     <PackageCertificateThumbprint>867D41FE5091AED426000143497EA4DFC29A8097</PackageCertificateThumbprint>
@@ -97,6 +110,7 @@
   </ItemDefinitionGroup>
   <ItemGroup>
     <ClInclude Include="pch.h" />
+    <ClInclude Include="Playground-Win32.h" />
     <ClInclude Include="resource.h" />
   </ItemGroup>
   <ItemGroup>
@@ -117,11 +131,11 @@
     <ResourceCompile Include="Playground-Win32.rc" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
-  <PropertyGroup>
+  <PropertyGroup Condition="'$(UseWinUI3)'!='true'">
     <MsAppxPackageTargets Condition="'$(MsAppxPackageTargets)'==''">$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)\AppxPackage\Microsoft.AppXPackage.Targets</MsAppxPackageTargets>
     <ProjectPriFileName>resources.pri</ProjectPriFileName>
   </PropertyGroup>
-  <Import Project="$(MsAppxPackageTargets)" Condition="Exists('$(MsAppxPackageTargets)')" />
+  <Import Project="$(MsAppxPackageTargets)" Condition="'$(UseWinUI3)'!='true' And Exists('$(MsAppxPackageTargets)')" />
   <ImportGroup Label="ReactNativeWindowsTargets">
     <Import Project="$(ReactNativeWindowsDir)\PropertySheets\External\Microsoft.ReactNative.Uwp.CppApp.targets" Condition="Exists('$(ReactNativeWindowsDir)\PropertySheets\External\Microsoft.ReactNative.Uwp.CppApp.targets')" />
   </ImportGroup>
@@ -134,6 +148,7 @@
   </Target>
   <ImportGroup Label="ExtensionTargets">
     <Import Project="..\packages\Microsoft.Windows.CppWinRT.2.0.200615.7\build\native\Microsoft.Windows.CppWinRT.targets" Condition="Exists('..\packages\Microsoft.Windows.CppWinRT.2.0.200615.7\build\native\Microsoft.Windows.CppWinRT.targets')" />
+    <Import Project="..\packages\$(WinUIPackageName).$(WinUIPackageVersion)\build\native\$(WinUIPackageName).targets" Condition="Exists('..\packages\$(WinUIPackageName).$(WinUIPackageVersion)\build\native\$(WinUIPackageName).targets')" />
     <Import Project="$(SolutionDir)packages\boost.1.72.0.0\build\boost.targets" Condition="Exists('$(SolutionDir)packages\boost.1.72.0.0\build\boost.targets')" />
     <Import Project="..\packages\Microsoft.VCRTForwarders.140.1.0.2-rc\build\native\Microsoft.VCRTForwarders.140.targets" Condition="Exists('..\packages\Microsoft.VCRTForwarders.140.1.0.2-rc\build\native\Microsoft.VCRTForwarders.140.targets')" />
     <Import Project="$(V8_Package)\build\native\ReactNative.V8JSI.Windows.targets" Condition="Exists('$(V8_Package)\build\native\ReactNative.V8JSI.Windows.targets') AND '$(USE_V8)' == 'true'" />
diff --git a/packages/playground/windows/playground-win32/pch.h b/packages/playground/windows/playground-win32/pch.h
index cdf4a1731bc..69d880ad9af 100644
--- a/packages/playground/windows/playground-win32/pch.h
+++ b/packages/playground/windows/playground-win32/pch.h
@@ -11,9 +11,7 @@
 
 #include <unknwn.h>
 
+#include <UI.Xaml.Hosting.DesktopWindowXamlSource.h>
 #include <winrt/Windows.Foundation.h>
 #include <winrt/Windows.UI.Xaml.Hosting.h>
-
-#include <Windows.UI.Xaml.Hosting.DesktopWindowXamlSource.h>
-
 #pragma pop_macro("GetCurrentTime")
diff --git a/packages/playground/windows/playground/packages.config b/packages/playground/windows/playground/packages.config
index a7fde84c020..f38160bf22c 100644
--- a/packages/playground/windows/playground/packages.config
+++ b/packages/playground/windows/playground/packages.config
@@ -2,5 +2,5 @@
 <packages>
   <package id="Microsoft.Windows.CppWinRT" version="2.0.200615.7" targetFramework="native" />
   <package id="Microsoft.UI.Xaml" version="2.3.191129002" targetFramework="native" />
-  <package id="Microsoft.WinUI" version="3.0.0-preview2.200713.0" targetFramework="native"/>
+  <package id="Microsoft.WinUI" version="3.0.0-development.200706.1-CI" targetFramework="native"/>
 </packages>
diff --git a/vnext/Microsoft.ReactNative.Cxx/Microsoft.ReactNative.Cxx.vcxitems b/vnext/Microsoft.ReactNative.Cxx/Microsoft.ReactNative.Cxx.vcxitems
index b4cc94dd121..213aba27c6e 100644
--- a/vnext/Microsoft.ReactNative.Cxx/Microsoft.ReactNative.Cxx.vcxitems
+++ b/vnext/Microsoft.ReactNative.Cxx/Microsoft.ReactNative.Cxx.vcxitems
@@ -47,6 +47,8 @@
     <ClInclude Include="$(MSBuildThisFileDirectory)UI.Xaml.Automation.Peers.h" />
     <ClInclude Include="$(MSBuildThisFileDirectory)UI.Xaml.Controls.Primitives.h" />
     <ClInclude Include="$(MSBuildThisFileDirectory)UI.Xaml.Documents.h" />
+    <ClInclude Include="$(MSBuildThisFileDirectory)UI.Xaml.Hosting.DesktopWindowXamlSource.h" />
+    <ClInclude Include="$(MSBuildThisFileDirectory)UI.Xaml.Hosting.h" />
     <ClInclude Include="$(MSBuildThisFileDirectory)UI.Xaml.Input.h" />
     <ClInclude Include="$(MSBuildThisFileDirectory)UI.Xaml.Markup.h" />
     <ClInclude Include="$(MSBuildThisFileDirectory)UI.Xaml.Media.h" />
diff --git a/vnext/Microsoft.ReactNative.Cxx/UI.Text.h b/vnext/Microsoft.ReactNative.Cxx/UI.Text.h
index d0dbcc19f7a..4b375e44ffd 100644
--- a/vnext/Microsoft.ReactNative.Cxx/UI.Text.h
+++ b/vnext/Microsoft.ReactNative.Cxx/UI.Text.h
@@ -8,6 +8,9 @@
 #ifdef USE_WINUI3
 #include <winrt/Microsoft.UI.Text.h>
 namespace text = winrt::Microsoft::UI::Text;
+namespace winrt::Microsoft::UI::Text {
+using FontStyle = winrt::Windows::UI::Text::FontStyle;
+}
 #else
 namespace text = winrt::Windows::UI::Text;
 #endif //  USE_WINUI3
diff --git a/vnext/Microsoft.ReactNative.Cxx/UI.Xaml.Hosting.DesktopWindowXamlSource.h b/vnext/Microsoft.ReactNative.Cxx/UI.Xaml.Hosting.DesktopWindowXamlSource.h
new file mode 100644
index 00000000000..5f7c46064ee
--- /dev/null
+++ b/vnext/Microsoft.ReactNative.Cxx/UI.Xaml.Hosting.DesktopWindowXamlSource.h
@@ -0,0 +1,11 @@
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT License.
+
+#pragma once
+
+#ifdef USE_WINUI3
+#include <Microsoft.UI.Xaml.Hosting.DesktopWindowXamlSource.h>
+using IDesktopWindowXamlSourceNative2 = IDesktopWindowXamlSourceNative;
+#else
+#include <Windows.UI.Xaml.Hosting.DesktopWindowXamlSource.h>
+#endif //  USE_WINUI3
diff --git a/vnext/Microsoft.ReactNative.Cxx/UI.Xaml.Hosting.h b/vnext/Microsoft.ReactNative.Cxx/UI.Xaml.Hosting.h
new file mode 100644
index 00000000000..feebbc2d9aa
--- /dev/null
+++ b/vnext/Microsoft.ReactNative.Cxx/UI.Xaml.Hosting.h
@@ -0,0 +1,10 @@
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT License.
+
+#pragma once
+
+#ifdef USE_WINUI3
+#include <winrt/Microsoft.UI.Xaml.Hosting.h>
+#else
+#include <winrt/Windows.UI.Xaml.Hosting.h>
+#endif //  USE_WINUI3
diff --git a/vnext/Microsoft.ReactNative/Modules/DeviceInfoModule.cpp b/vnext/Microsoft.ReactNative/Modules/DeviceInfoModule.cpp
index 397a569351c..fceeed86f61 100644
--- a/vnext/Microsoft.ReactNative/Modules/DeviceInfoModule.cpp
+++ b/vnext/Microsoft.ReactNative/Modules/DeviceInfoModule.cpp
@@ -4,7 +4,9 @@
 #include "pch.h"
 #include "DeviceInfoModule.h"
 #include <IReactDispatcher.h>
+#include <UI.Xaml.Hosting.DesktopWindowXamlSource.h>
 #include <XamlUtils.h>
+#include <winrt/Microsoft.ReactNative.h>
 #include <winrt/Windows.UI.Core.h>
 #include <winrt/Windows.UI.ViewManagement.h>
 
@@ -30,14 +32,17 @@ void DeviceInfoHolder::InitDeviceInfoHolder(
     propertyBag.Set(DeviceInfoHolderPropertyId(), std::move(deviceInfoHolder));
 
     auto const &displayInfo = winrt::Windows::Graphics::Display::DisplayInformation::GetForCurrentView();
-    auto const &window = xaml::Window::Current().CoreWindow();
-
-    deviceInfoHolder->m_sizeChangedRevoker =
-        window.SizeChanged(winrt::auto_revoke, [weakHolder = std::weak_ptr(deviceInfoHolder)](auto &&, auto &&) {
-          if (auto strongHolder = weakHolder.lock()) {
-            strongHolder->updateDeviceInfo();
-          }
-        });
+    /// TODO: WinUI 3 islands support
+    if (xaml::Window::Current()) {
+      auto const &window = xaml::Window::Current().CoreWindow();
+
+      deviceInfoHolder->m_sizeChangedRevoker =
+          window.SizeChanged(winrt::auto_revoke, [weakHolder = std::weak_ptr(deviceInfoHolder)](auto &&, auto &&) {
+            if (auto strongHolder = weakHolder.lock()) {
+              strongHolder->updateDeviceInfo();
+            }
+          });
+    }
 
     deviceInfoHolder->m_dpiChangedRevoker = displayInfo.DpiChanged(
         winrt::auto_revoke, [weakHolder = std::weak_ptr(deviceInfoHolder)](const auto &, const auto &) {
@@ -86,14 +91,28 @@ void DeviceInfoHolder::SetCallback(
 }
 
 void DeviceInfoHolder::updateDeviceInfo() noexcept {
-  auto const displayInfo = winrt::Windows::Graphics::Display::DisplayInformation::GetForCurrentView();
-  auto const window = xaml::Window::Current().CoreWindow();
+  if (xaml::Window::Current()) {
+    auto const window = xaml::Window::Current().CoreWindow();
+
+    m_windowWidth = window.Bounds().Width;
+    m_windowHeight = window.Bounds().Height;
+  } else {
+    /// TODO: WinUI 3 Island - mock for now
+    m_windowWidth = 600;
+    m_windowHeight = 800;
+
+    /*
+        auto interop = m_desktopWindowXamlSource.as<IDesktopWindowXamlSourceNative>();
+
+        // Get the new child window's hwnd
+        HWND hWndXamlIsland = nullptr;
+        winrt::check_hresult(interop->get_WindowHandle(&hWndXamlIsland));
+        */
+  }
   winrt::Windows::UI::ViewManagement::UISettings uiSettings;
-
-  m_windowWidth = window.Bounds().Width;
-  m_windowHeight = window.Bounds().Height;
-  m_scale = static_cast<float>(displayInfo.ResolutionScale()) / 100;
   m_textScaleFactor = uiSettings.TextScaleFactor();
+  auto const displayInfo = winrt::Windows::Graphics::Display::DisplayInformation::GetForCurrentView();
+  m_scale = static_cast<float>(displayInfo.ResolutionScale()) / 100;
   m_dpi = displayInfo.LogicalDpi();
   m_screenWidth = displayInfo.ScreenWidthInRawPixels();
   m_screenHeight = displayInfo.ScreenHeightInRawPixels();
diff --git a/vnext/Microsoft.ReactNative/Modules/I18nManagerModule.cpp b/vnext/Microsoft.ReactNative/Modules/I18nManagerModule.cpp
index df073057552..c3273869b08 100644
--- a/vnext/Microsoft.ReactNative/Modules/I18nManagerModule.cpp
+++ b/vnext/Microsoft.ReactNative/Modules/I18nManagerModule.cpp
@@ -5,9 +5,11 @@
 #include "I18nManagerModule.h"
 #include <IReactDispatcher.h>
 #include <XamlUtils.h>
+#include <utils/Helpers.h>
 #include <winrt/Windows.ApplicationModel.Resources.Core.h>
 #include <winrt/Windows.Globalization.h>
 #include "Unicode.h"
+#include <utils/Helpers.h>
 
 namespace Microsoft::ReactNative {
 
@@ -27,7 +29,8 @@ static const React::ReactPropertyId<bool> &ForceRTLPropertyId() noexcept {
 }
 
 void I18nManager::InitI18nInfo(const winrt::Microsoft::ReactNative::ReactPropertyBag &propertyBag) noexcept {
-  if (xaml::TryGetCurrentApplication()) {
+  if (xaml::TryGetCurrentApplication() && !react::uwp::IsXamlIsland()) {
+    // TODO: Figure out packaged win32 app story for WinUI 3
     auto layoutDirection = winrt::Windows::ApplicationModel::Resources::Core::ResourceContext()
                                .GetForCurrentView()
                                .QualifierValues()
diff --git a/vnext/Microsoft.ReactNative/Utils/PropertyUtils.h b/vnext/Microsoft.ReactNative/Utils/PropertyUtils.h
index ac495d3b81c..6c3e1f0e19b 100644
--- a/vnext/Microsoft.ReactNative/Utils/PropertyUtils.h
+++ b/vnext/Microsoft.ReactNative/Utils/PropertyUtils.h
@@ -310,12 +310,9 @@ bool TryUpdateFontProperties(const T &element, const std::string &propertyName,
     } else if (propertyValue.isNull()) {
       element.ClearValue(T::FontWeightProperty());
     }
-
   } else if (propertyName == "fontStyle") {
     if (propertyValue.isString()) {
-      element.FontStyle(
-          (propertyValue.getString() == "italic") ? winrt::Windows::UI::Text::FontStyle::Italic
-                                                  : winrt::Windows::UI::Text::FontStyle::Normal);
+      element.FontStyle((propertyValue.getString() == "italic") ? text::FontStyle::Italic : text::FontStyle::Normal);
     } else if (propertyValue.isNull()) {
       element.ClearValue(T::FontStyleProperty());
     }
diff --git a/vnext/Microsoft.ReactNative/Views/TouchEventHandler.cpp b/vnext/Microsoft.ReactNative/Views/TouchEventHandler.cpp
index 8c5abe36a49..39df8712920 100644
--- a/vnext/Microsoft.ReactNative/Views/TouchEventHandler.cpp
+++ b/vnext/Microsoft.ReactNative/Views/TouchEventHandler.cpp
@@ -18,7 +18,9 @@
 #include <winrt/Windows.Foundation.h>
 #include <winrt/Windows.UI.Core.h>
 #include <winrt/Windows.UI.Input.h>
-
+#ifdef USE_WINUI3
+#include <winrt/Microsoft.UI.Input2.Experimental.h>
+#endif
 namespace react {
 namespace uwp {
 
@@ -202,12 +204,18 @@ TouchEventHandler::ReactPointer TouchEventHandler::CreateReactPointer(
   pointer.target = tag;
   pointer.identifier = m_touchId++;
   pointer.pointerId = point.PointerId();
+#ifndef USE_WINUI3
   pointer.deviceType = point.PointerDevice().PointerDeviceType();
+#else
+  pointer.deviceType = point.PointerDeviceType();
+#endif
   pointer.isLeftButton = props.IsLeftButtonPressed();
   pointer.isRightButton = props.IsRightButtonPressed();
   pointer.isMiddleButton = props.IsMiddleButtonPressed();
   pointer.isHorizontalScrollWheel = props.IsHorizontalMouseWheel();
+#ifndef USE_WINUI3
   pointer.isEraser = props.IsEraser();
+#endif
 
   UpdateReactPointer(pointer, args, sourceElement);
 
@@ -226,7 +234,9 @@ void TouchEventHandler::UpdateReactPointer(
   pointer.positionRoot = rootPoint.Position();
   pointer.positionView = point.Position();
   pointer.timestamp = point.Timestamp() / 1000; // us -> ms
+#ifndef USE_WINUI3
   pointer.pressure = props.Pressure();
+#endif
   pointer.isBarrelButton = props.IsBarrelButtonPressed();
   pointer.shiftKey = 0 != (keyModifiers & static_cast<uint32_t>(winrt::Windows::System::VirtualKeyModifiers::Shift));
   pointer.ctrlKey = 0 != (keyModifiers & static_cast<uint32_t>(winrt::Windows::System::VirtualKeyModifiers::Control));
diff --git a/vnext/Microsoft.ReactNative/packages.config b/vnext/Microsoft.ReactNative/packages.config
index 2864726f934..d64357df546 100644
--- a/vnext/Microsoft.ReactNative/packages.config
+++ b/vnext/Microsoft.ReactNative/packages.config
@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="boost" version="1.72.0.0" targetFramework="native" />
   <package id="Microsoft.Build.Tasks.Git" version="1.0.0" targetFramework="native" developmentDependency="true" />
@@ -6,5 +6,5 @@
   <package id="Microsoft.SourceLink.GitHub" version="1.0.0" targetFramework="native" developmentDependency="true" />
   <package id="Microsoft.UI.Xaml" version="2.3.191129002" targetFramework="native" />
   <package id="Microsoft.Windows.CppWinRT" version="2.0.200615.7" targetFramework="native" />
-  <package id="Microsoft.WinUI" version="3.0.0-preview2.200713.0" targetFramework="native" />
+  <package id="Microsoft.WinUI" version="3.0.0-development.200706.1-CI" targetFramework="native"/>
 </packages>
\ No newline at end of file
diff --git a/vnext/NuGet.Config b/vnext/NuGet.Config
index a6d079d69b4..8a7dab4d15f 100644
--- a/vnext/NuGet.Config
+++ b/vnext/NuGet.Config
@@ -5,6 +5,7 @@
   </config>
   <packageSources>
     <add key="Nuget.org" value="https://api.nuget.org/v3/index.json" />
+    <add key="localPackage" value="C:\temp\3.0.0-development.200706.1-CI" />
   </packageSources>
 
 </configuration>
diff --git a/vnext/PropertySheets/WinUI.props b/vnext/PropertySheets/WinUI.props
index 7c099ca9dda..f57ae1f5c47 100644
--- a/vnext/PropertySheets/WinUI.props
+++ b/vnext/PropertySheets/WinUI.props
@@ -6,7 +6,7 @@
 
   <PropertyGroup Label="WinUI3 versioning">
     <!-- This value is also used by the CLI, see \vnext\local-cli\src\generator-windows\index.ts -->
-    <WinUI3Version>3.0.0-preview2.200713.0</WinUI3Version>
+    <WinUI3Version>3.0.0-development.200706.1-CI</WinUI3Version>
   </PropertyGroup>
   <PropertyGroup Condition="'$(UseWinUI3)'=='true'">
     <WinUIPackageName>Microsoft.WinUI</WinUIPackageName>
@@ -31,10 +31,14 @@
     <!-- Enlighten C++ code about WinUI3 -->
     <ClCompile>
       <PreprocessorDefinitions>USE_WINUI3;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <!-- Preview 2 will need experimental types due to IXP -->
+      <PreprocessorDefinitions>ENABLE_WINRT_EXPERIMENTAL_TYPES=1;%(PreprocessorDefinitions)</PreprocessorDefinitions>
     </ClCompile>
     <!-- Enlighten IDL interfaces about WinUI3 -->
     <Midl>
       <PreprocessorDefinitions>USE_WINUI3;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <!-- Preview 2 will need experimental types due to IXP -->
+      <PreprocessorDefinitions>ENABLE_WINRT_EXPERIMENTAL_TYPES=1;DISABLE_MIDL_VERSION_CHECKS=1;%(PreprocessorDefinitions)</PreprocessorDefinitions>
     </Midl>
   </ItemDefinitionGroup>
 
diff --git a/vnext/Shared/Modules/UIManagerModule.cpp b/vnext/Shared/Modules/UIManagerModule.cpp
index 48eda8d068a..2c041985795 100644
--- a/vnext/Shared/Modules/UIManagerModule.cpp
+++ b/vnext/Shared/Modules/UIManagerModule.cpp
@@ -9,6 +9,7 @@ using namespace std;
 #include <algorithm>
 #include <iostream>
 
+#include <unicode.h>
 #include "ShadowNode.h"
 #include "ShadowNodeRegistry.h"
 #include "UIManagerModule.h"
@@ -248,20 +249,24 @@ void UIManager::createView(
     std::string &&className,
     int64_t /*rootViewTag*/,
     folly::dynamic && /*ReadableMap*/ props) {
-  m_nativeUIManager->ensureInBatch();
-  auto viewManager = GetViewManager(className);
-  auto node = viewManager->createShadow();
-  node->m_className = std::move(className);
-  node->m_tag = tag;
-  node->m_viewManager = viewManager;
-
-  node->createView();
-  m_nativeUIManager->CreateView(*node, props);
-
-  m_nodeRegistry.addNode(shadow_ptr(node), tag);
-
-  if (!props.isNull())
-    node->updateProperties(std::move(props));
+  try {
+    m_nativeUIManager->ensureInBatch();
+    auto viewManager = GetViewManager(className);
+    auto node = viewManager->createShadow();
+    node->m_className = std::move(className);
+    node->m_tag = tag;
+    node->m_viewManager = viewManager;
+
+    node->createView();
+    m_nativeUIManager->CreateView(*node, props);
+
+    m_nodeRegistry.addNode(shadow_ptr(node), tag);
+
+    if (!props.isNull())
+      node->updateProperties(std::move(props));
+  } catch (winrt::hresult_error &hr) {
+    throw Microsoft::Common::Unicode::Utf16ToUtf8(hr.message());
+  }
 }
 
 void UIManager::setChildren(int64_t viewTag, folly::dynamic &&childrenTags) {