diff --git a/src/blueprint/HISTORY.rst b/src/blueprint/HISTORY.rst
index ae49811461f..f4bde44066f 100644
--- a/src/blueprint/HISTORY.rst
+++ b/src/blueprint/HISTORY.rst
@@ -2,6 +2,10 @@
 
 Release History
 ===============
+1.0.0b1
++++++
+* Deprecate blueprint commands
+
 0.3.2
 +++++
 * Migrate to atomic commands
diff --git a/src/blueprint/azext_blueprint/_breaking_change.py b/src/blueprint/azext_blueprint/_breaking_change.py
new file mode 100644
index 00000000000..dc4cfae870b
--- /dev/null
+++ b/src/blueprint/azext_blueprint/_breaking_change.py
@@ -0,0 +1,18 @@
+# --------------------------------------------------------------------------------------------
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License. See License.txt in the project root for license information.
+# --------------------------------------------------------------------------------------------
+
+
+from azure.cli.core.breaking_change import register_command_group_deprecate, register_other_breaking_change
+
+
+register_command_group_deprecate('az blueprint')
+
+message = """Blueprints and associated commands will be deprecated
+as early as July 2026. Customers are encouraged to transition to
+Template Specs and Deployments Stacks to support their scenarios beyond that date.
+Migration documentation is available at
+https://learn.microsoft.com/en-us/azure/azure-resource-manager/bicep/migrate-blueprint."""
+
+register_other_breaking_change('az blueprint', message)
diff --git a/src/blueprint/azext_blueprint/azext_metadata.json b/src/blueprint/azext_blueprint/azext_metadata.json
index 3f82093c78b..7e5dc9636ac 100644
--- a/src/blueprint/azext_blueprint/azext_metadata.json
+++ b/src/blueprint/azext_blueprint/azext_metadata.json
@@ -1,4 +1,4 @@
 {
-    "azext.isExperimental": true,
+    "azext.isPreview": true,
     "azext.minCliCoreVersion": "2.50.0"
 }
\ No newline at end of file
diff --git a/src/blueprint/azext_blueprint/custom.py b/src/blueprint/azext_blueprint/custom.py
index 637b96b3c8e..f7fadc76449 100644
--- a/src/blueprint/azext_blueprint/custom.py
+++ b/src/blueprint/azext_blueprint/custom.py
@@ -114,8 +114,8 @@ def build_arguments_schema(args_schema):
         arg_group="Resource_scope",
         help="Use subscription for the scope of the blueprint. If --management-group is not specified, "
              "--subscription value or the default subscription will be used as the scope.")
-    args_schema.resource_scope._required = False
-    args_schema.resource_scope._registered = False
+    args_schema.resource_scope._required = False  # pylint: disable=W0212
+    args_schema.resource_scope._registered = False  # pylint: disable=W0212
     return args_schema
 
 
diff --git a/src/blueprint/setup.py b/src/blueprint/setup.py
index 9eca552b598..2264a5e387b 100644
--- a/src/blueprint/setup.py
+++ b/src/blueprint/setup.py
@@ -16,7 +16,7 @@
 
 # TODO: Confirm this is the right version number you want and it matches your
 # HISTORY.rst entry.
-VERSION = '0.3.2'
+VERSION = '1.0.0b1'
 
 
 # The full list of classifiers is available at