Work on Npgsql 10 breaking change notes (#425)

Author: roji

conceptual/EFCore.PG/release-notes/10.0.md

@@ -145,6 +145,7 @@ See the [10.0.0 milestone](https://github.com/npgsql/efcore.pg/milestone/68?clos
 ## Breaking changes
 
 * `EF.Functions.Network()` and `EF.Functions.Merge()` have been changed to return the new .NET [`IPNetwork`](https://learn.microsoft.com/dotnet/api/system.net.ipnetwork) instead of the obsolete `NpgsqlCidr`. The new `IPNetwork` type works with all other functions as well (but no breaking changes were necessary).
+* The PostgreSQL network type `cidr` is now scaffolded to the new .NET [`IPNetwork`](https://learn.microsoft.com/dotnet/api/system.net.ipnetwork) type. The older Npgsql representation for `cidr` - the `NpgsqlCidr` type - has been obsoleted and will be removed in a future release.
 
 ## Contributors
 

conceptual/Npgsql/release-notes/10.0.md

@@ -2,6 +2,9 @@
 
 Npgsql version 10.0 is now in development, preview versions are available on [nuget.org](https://www.nuget.org/packages/Npgsql).
 
+> [!NOTE]
+> The 10.0 release notes will be published soon.
+
 ## Breaking changes
 
-* The PostgreSQL network type `cidr` is now scaffolded to the new .NET [`IPNetwork`](https://learn.microsoft.com/dotnet/api/system.net.ipnetwork) type. The older Npgsql representation for `cidr` - the `NpgsqlCidr` type - has been obsoleted and will be removed in a future release.
+* The PostgreSQL `date` and `time` types are now read as .NET [`DateOnly`](https://learn.microsoft.com/dotnet/api/system.dateonly) and [`TimeOnly`](https://learn.microsoft.com/dotnet/api/system.timeonly), instead of [`DateTime`](https://learn.microsoft.com/dotnet/api/system.datetime) and [`TimeSpan`](https://learn.microsoft.com/dotnet/api/system.timespan), respectively. This affects non-generic read methods which return `object`, such as <xref:Npgsql.NpgsqlCommand.ExecuteScalarAsync*> and <xref:Npgsql.NpgsqlDataReader.GetValue*?displayProperty=nameWithType>; you can still read `DateTime` and `TimeSpan` via the generic <xref:Npgsql.NpgsqlDataReader.GetFieldValue%2A>.

conceptual/Npgsql/toc.yml

@@ -2,6 +2,8 @@
   href: index.md
 - name: Release notes
   items:
+  - name: "10.0 (rc)"
+    href: release-notes/10.0.md
   - name: "9.0"
     href: release-notes/9.0.md
   - name: "8.0"