Add .NET MAUI Preview 3 release notes

release-notes/11.0/preview/preview3/README.md

@@ -12,6 +12,7 @@ These notes cover the highest-value changes that shipped in .NET 11 Preview 3:
 
 ## Web and data
 
+- [.NET MAUI](./dotnetmaui.md)
 - [ASP.NET Core](./aspnetcore.md)
 - [EF Core](./efcore.md)
 
@@ -41,6 +42,7 @@ Instructions on getting started with .NET 11 can be found in the
 
 You can find a broader overview of .NET 11 here:
 
+- [What's new in .NET MAUI in .NET 11](https://learn.microsoft.com/dotnet/maui/whats-new/)
 - [What's new in .NET 11](https://learn.microsoft.com/dotnet/core/whats-new/dotnet-11/overview)
 - [What's new in ASP.NET Core for .NET 11](https://learn.microsoft.com/aspnet/core/release-notes/aspnetcore-11)
 - [What's new in EF Core 11](https://learn.microsoft.com/ef/core/what-is-new/ef-core-11.0/whatsnew)

release-notes/11.0/preview/preview3/dotnetmaui.md

@@ -0,0 +1,163 @@
+# .NET MAUI in .NET 11 Preview 3 - Release Notes
+
+.NET 11 Preview 3 includes new .NET MAUI, .NET for Android, and .NET for iOS,
+Mac Catalyst, macOS, and tvOS improvements:
+
+- [Maps add clustering, styling, and richer interaction APIs](#maps-add-clustering-styling-and-richer-interaction-apis)
+- [XAML and styling improvements reduce startup work and speed up iteration](#xaml-and-styling-improvements-reduce-startup-work-and-speed-up-iteration)
+- [LongPressGestureRecognizer is now built into .NET MAUI](#longpressgesturerecognizer-is-now-built-into-net-maui)
+- [Platform integration adds iOS notification permission support](#platform-integration-adds-ios-notification-permission-support)
+- [.NET for Android adds Android 17 / API 37 preview support](#net-for-android-adds-android-17--api-37-preview-support)
+- [.NET for Android improves CLI device discovery and deploy flow](#net-for-android-improves-cli-device-discovery-and-deploy-flow)
+- [.NET for Apple workloads improve packaging and binding quality](#net-for-apple-workloads-improve-packaging-and-binding-quality)
+- [Bug fixes](#bug-fixes)
+
+.NET MAUI updates in .NET 11:
+
+- [What's new in .NET MAUI in .NET 11](https://learn.microsoft.com/dotnet/maui/whats-new/)
+
+## Maps add clustering, styling, and richer interaction APIs
+
+The Map control gets a substantial wave of functionality in Preview 3,
+including pin clustering, custom pin icons, custom JSON styling,
+`MapLongClicked`, click events for circles, polygons, and polylines,
+`MapElement.IsVisible` and `ZIndex`, programmatic info-window control,
+smoother region changes, and richer user-location events
+([dotnet/maui #29101](https://github.com/dotnet/maui/pull/29101),
+[dotnet/maui #33831](https://github.com/dotnet/maui/pull/33831),
+[dotnet/maui #33950](https://github.com/dotnet/maui/pull/33950),
+[dotnet/maui #33982](https://github.com/dotnet/maui/pull/33982),
+[dotnet/maui #33985](https://github.com/dotnet/maui/pull/33985),
+[dotnet/maui #33792](https://github.com/dotnet/maui/pull/33792),
+[dotnet/maui #33799](https://github.com/dotnet/maui/pull/33799),
+[dotnet/maui #33991](https://github.com/dotnet/maui/pull/33991),
+[dotnet/maui #33993](https://github.com/dotnet/maui/pull/33993)). These APIs
+make it easier to build dense, interactive map experiences without falling back
+to platform-specific implementations.
+
+```xaml
+<maps:Map IsClusteringEnabled="True"
+          MapLongClicked="OnMapLongClicked">
+    <maps:Pin Label="Seattle"
+              Location="47.6062,-122.3321"
+              ClusteringIdentifier="stores"
+              ImageSource="store.png" />
+</maps:Map>
+```
+
+## XAML and styling improvements reduce startup work and speed up iteration
+
+XAML Source Generation now registers `ResourceDictionary` entries as factories
+and inflates them on demand instead of materializing every style and brush at
+page startup ([dotnet/maui #33826](https://github.com/dotnet/maui/pull/33826)).
+Preview 3 also enables implicit XAML namespace declarations by default, adds
+explicit APIs to reapply mutated styles and visual states during Hot Reload or
+dynamic UI updates, and makes MAUI CSS trimmable when an app does not use
+stylesheets, reducing unnecessary app size
+([dotnet/maui #33834](https://github.com/dotnet/maui/pull/33834),
+[dotnet/maui #34723](https://github.com/dotnet/maui/pull/34723),
+[dotnet/maui #33160](https://github.com/dotnet/maui/pull/33160)).
+
+In particular, `InvalidateStyle()` and
+`VisualStateManager.InvalidateVisualStates()` give tooling and app code an
+explicit way to reapply in-place style and visual-state mutations without
+recreating the element tree.
+
+```xaml
+<ContentPage.Resources>
+    <Style x:Key="PrimaryButtonStyle" TargetType="Button">
+        <Setter Property="Padding" Value="12,8" />
+    </Style>
+</ContentPage.Resources>
+```
+
+## LongPressGestureRecognizer is now built into .NET MAUI
+
+.NET MAUI now includes a built-in `LongPressGestureRecognizer` with duration,
+movement-threshold, state-change, and command support across platforms
+([dotnet/maui #33432](https://github.com/dotnet/maui/pull/33432)). This gives
+press-and-hold interactions a first-party API instead of requiring toolkit
+behaviors or custom handlers.
+
+```xaml
+<Image Source="avatar.png">
+    <Image.GestureRecognizers>
+        <LongPressGestureRecognizer
+            MinimumPressDuration="750"
+            Command="{Binding ShowContextMenuCommand}" />
+    </Image.GestureRecognizers>
+</Image>
+```
+
+## Platform integration adds iOS notification permission support
+
+Preview 3 adds an implementation of the `PostNotifications` permission on iOS,
+so apps can request notification authorization through the cross-platform
+Permissions API instead of dropping to platform-specific code
+([dotnet/maui #30132](https://github.com/dotnet/maui/pull/30132)).
+
+```csharp
+var status = await Permissions.RequestAsync<Permissions.PostNotifications>();
+```
+
+## .NET for Android adds Android 17 / API 37 preview support
+
+.NET for Android Preview 3 aligns with Android 17 / API 37 previews so apps can
+start validating against the upcoming platform now. Set
+`net11.0-android37` together with `EnablePreviewFeatures` to opt into the new
+target framework and platform APIs. This guidance comes from the official
+Preview 3 Android release notes:
+<https://github.com/dotnet/android/releases/tag/36.99.0-preview.3.10>.
+
+```xml
+<PropertyGroup>
+  <TargetFramework>net11.0-android37</TargetFramework>
+  <EnablePreviewFeatures>true</EnablePreviewFeatures>
+</PropertyGroup>
+```
+
+## .NET for Android improves CLI device discovery and deploy flow
+
+`dotnet run` can now list available emulators and auto-boot a selected AVD
+before deployment
+([dotnet/android #10826](https://github.com/dotnet/android/pull/10826). These
+changes make CLI-first Android development less dependent on IDE-only device
+management.
+
+## .NET for Apple workloads improve packaging and binding quality
+
+Preview 3 improves Apple workload packaging by filtering static frameworks out
+of post-processing so only frameworks that actually ship in the app bundle are
+stripped and symbol-processed
+([dotnet/macios #24845](https://github.com/dotnet/macios/pull/24845)). The
+release branch also includes binding-quality work such as improved nullability
+annotations for `NSArray` APIs
+([dotnet/macios #24907](https://github.com/dotnet/macios/pull/24907)).
+
+## Bug fixes
+
+- **XAML** - duplicate implicit content assignments now produce clearer
+  warnings, and XamlC respects `ObsoleteAttribute` messaging in generated
+  diagnostics ([dotnet/maui #32654](https://github.com/dotnet/maui/pull/32654),
+  [dotnet/maui #32946](https://github.com/dotnet/maui/pull/32946)).
+- **Android** - fixed a GC live-lock issue that could surface during rapid UI
+  switching ([dotnet/android #10856](https://github.com/dotnet/android/pull/10856)).
+- **Apple packaging** - fixed app bundle post-processing and multi-RID publish
+  handling for Apple workloads ([dotnet/macios #24845](https://github.com/dotnet/macios/pull/24845)).
+
+## Contributors
+
+Thank you contributors! ❤️
+
+[@adamzip](https://github.com/adamzip), [@Ahamed-Ali](https://github.com/Ahamed-Ali),
+[@csigs](https://github.com/csigs),
+[@dalexsoto](https://github.com/dalexsoto), [@davidnguyen-tech](https://github.com/davidnguyen-tech),
+[@grendello](https://github.com/grendello), [@Happypig375](https://github.com/Happypig375),
+[@IeuanWalker](https://github.com/IeuanWalker), [@jfversluis](https://github.com/jfversluis),
+[@jonathanpeppers](https://github.com/jonathanpeppers), [@jonpryor](https://github.com/jonpryor),
+[@kotlarmilos](https://github.com/kotlarmilos), [@kubaflo](https://github.com/kubaflo),
+[@mattleibow](https://github.com/mattleibow), [@NirmalKumarYuvaraj](https://github.com/NirmalKumarYuvaraj),
+[@noiseonwires](https://github.com/noiseonwires), [@PureWeen](https://github.com/PureWeen),
+[@rmarinho](https://github.com/rmarinho), [@rolfbjarne](https://github.com/rolfbjarne),
+[@sbomer](https://github.com/sbomer), [@sheiksyedm](https://github.com/sheiksyedm),
+[@simonrozsival](https://github.com/simonrozsival), and [@StephaneDelcroix](https://github.com/StephaneDelcroix).