Artifacts for .NET 9 Preview 4 Release (#9315)

* Artifacts for .NET 9 Preview 4 Release

* Update 9.0.0-preview.4.md

Author: rbhanda

README.md

@@ -18,14 +18,14 @@ The following [.NET releases](./releases.md) are currently supported:
 
 |  Version  | Release Date | Support | Latest Patch Version | End of Support |
 | :-- | :-- | :-- | :-- | :-- |
-| [.NET 9](release-notes/9.0/README.md) | November 12, 2024 | [STS][policies] | [9.0.0-preview.3][9.0.0-preview.3] |  |
+| [.NET 9](release-notes/9.0/README.md) | November 12, 2024 | [STS][policies] | [9.0.0-preview.4][9.0.0-preview.4] |  |
 | [.NET 8](release-notes/8.0/README.md) | [November 14, 2023](https://devblogs.microsoft.com/dotnet/announcing-dotnet-8/) | [LTS][policies] | [8.0.5][8.0.5] | November 10, 2026 |
 | [.NET 6](release-notes/6.0/README.md) | [November 8, 2021](https://devblogs.microsoft.com/dotnet/announcing-net-6/) | [LTS][policies] | [6.0.30][6.0.30]  | November 12, 2024 |
 
 
 You can find release notes for all releases, including out-of-support releases, in the [release-notes](release-notes) directory.
 
-[9.0.0-preview.3]: release-notes/9.0/preview/preview3/9.0.0-preview.3.md
+[9.0.0-preview.4]: release-notes/9.0/preview/preview4/9.0.0-preview.4.md
 [8.0.5]: release-notes/8.0/8.0.5/8.0.5.md
 [6.0.30]: release-notes/6.0/6.0.30/6.0.30.md
 

release-notes/9.0/preview/preview4/9.0.0-preview.4.md

@@ -0,0 +1,34 @@
+# .NET 9 Preview 4 - Release Notes
+
+.NET 9 Preview 4 was released on May 21st, 2024. Find more information on new features released in .NET 9 Preview 4 by browsing through the release notes below:
+
+* [Libraries](./libraries.md)
+* [Runtime](./runtime.md)
+
+### Feature Release Notes
+
+* [.NET Data and EF Core](./efcoreanddata.md)
+* [.NET MAUI](./dotnetmaui.md)
+* [ASP.NET Core](./aspnetcore.md)
+* [WPF](./wpf.md)
+
+## Get Started
+
+Instructions on getting started with .NET 9 can be found in the [getting started guide](../../get-started.md). Installers and binaries for .NET 9 Preview 4 can be found [here on GitHub](./9.0.0-preview.4.md). 
+
+## Announcements & Discussions
+
+Discuss this release with the product teams on GitHub through the announcements for this release. 
+
+* [.NET 9 Preview 4 Announcement](https://aka.ms/dotnet/9/preview4)
+
+## Stay up-to-date
+
+You can find a detailed overview of all new features in .NET 9:
+
+* [What's new in .NET 9](https://learn.microsoft.com/dotnet/core/whats-new/dotnet-9/overview)
+* [What's new in ASP.NET Core](https://learn.microsoft.com/aspnet/core/release-notes/aspnetcore-9.0)
+* [What's new in .NET MAUI](https://learn.microsoft.com/dotnet/maui/whats-new/dotnet-9)
+* [What's new in EF Core](https://learn.microsoft.com/ef/core/what-is-new/ef-core-9.0/whatsnew)
+
+The latest .NET 9 release is always available at [dotnet.microsoft.com](https://dotnet.microsoft.com/download/dotnet/9.0) and [.NET 9 Releases](../../README.md).

release-notes/9.0/preview/preview4/README.md

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+# .NET MAUI in .NET 9 Preview 4 - Release Notes
+
+Here's a summary of what's new in .NET MAUI in this preview release:
+
+- [New Input Keyboards](#new-input-keyboards)
+- [Android 15 Beta 1 Support](#android-15-beta-1-support)
+- [NativeAOT improvements for iOS & Mac Catalyst](#native-aot-for-ios--mac-catalyst)
+
+.NET MAUI updates in .NET 9 Preview 4:
+
+* [What's new in .NET MAUI in .NET 9](https://learn.microsoft.com/dotnet/maui/whats-new/dotnet-9) documentation
+* [GitHub Release](https://aka.ms/maui9p4)
+
+.NET 9 Preview 4:
+* [Discussion](https://aka.ms/dotnet/9/preview4)
+* [Release notes](./README.md)
+
+
+## New Input Keyboards
+
+In this release we have added new soft keyboard input support for `Password`, `Date`, and `Time`. Enable these on the `Editor` and `Entry` input controls like:
+
+```xml
+<Entry Keyboard="Date" />
+```
+
+## .NET for Android
+
+### Android 15 Beta 1 Support
+
+This release introduces .NET bindings for Beta 1 of Android 15 codenamed "Vanilla Ice Cream". To build for these APIs, update the target framework of your project.
+
+```xml
+<TargetFramework>net9.0-android35</TargetFramework>
+```
+
+Additional release information can be found on [GitHub releases](https://github.com/xamarin/xamarin-android/releases/).
+
+## .NET for iOS
+
+### Native AOT for iOS & Mac Catalyst
+
+Native AOT (Ahead of Time) compilation for iOS and Mac Catalyst now takes advantage of full trimming to greatly reduce your application's package size and startup performance. This is a publishing feature that you can use when you're ready to ship your application. Your application and all dependencies must be fully trimmable in order to utilize this feature.
+
+```
+dotnet publish -f net9.0-maccatalyst -r maccatalyst-arm64
+```
+
+![benchmark results of app size reduction and performance improvement](./media/nativeaot-perf.png)
+
+This release was focused on quality, additional information can be found on [GitHub releases](https://github.com/xamarin/xamarin-macios/releases/) and [known issues in .NET 9](https://github.com/xamarin/xamarin-macios/wiki/Known-issues-in-.NET9).
+
+## Community Contributions
+
+Thanks to contributors [@MartyIX](https://github.com/MartyIX), [@beeradmoore](https://github.com/beeradmoore), [@atoghyani](https://github.com/atoghyani), [@taublast](https://github.com/taublast), [@VladislavAntonyuk](https://github.com/VladislavAntonyuk), [@Axemasta](https://github.com/Axemasta), [@kubaflo](https://github.com/kubaflo), and [@ivanpovazan](https://github.com/ivanpovazan).

release-notes/9.0/preview/preview4/aspnetcore.md

@@ -0,0 +1,47 @@
+# Entity Framework Core 9 Preview 4 - Release Notes
+
+Here's a summary of what's new in Entity Framework Core in this preview release:
+
+- [Enhanced database provider for Azure Cosmos DB for NoSQL](#enhanced-database-provider-for-azure-cosmos-db-for-nosql)
+- [GroupBy complex types](#groupby-complex-types)
+- [Read-only primitive collections](#read-only-primitive-collections)
+
+Entity Framework Core 9:
+
+- [What's new in Entity Framework Core](https://learn.microsoft.com/ef/core/what-is-new/ef-core-9.0/whatsnew) documentation.
+- [Discussion](https://github.com/dotnet/efcore/issues/33030)
+
+.NET 9 Preview 4:
+
+- [Discussion](https://aka.ms/dotnet/9/preview4)
+- [Release notes](./README.md)
+ 
+## Enhanced database provider for Azure Cosmos DB for NoSQL
+ The EF Core database provider for Azure Cosmos DB for NoSQL has received the following updates:
+ 
+* Role-based access control (RBAC) is supported by EF9 for both management and use of containers.
+* Azure Cosmos DB for NoSQL does not support synchronous (blocking) access from application code. EF Core now blocks synchronous access by default, helping people fall into the pit-of-success of using async I/O.
+* Cosmos primitive collection support has been updated to use the metadata and model building APIs from EF8
+ 
+> See [Azure Cosmos DB for NoSQL](https://learn.microsoft.com/ef/core/what-is-new/ef-core-9.0/whatsnew#cosmos) in the _What's New_ docs for more information.
+  
+  
+## GroupBy complex types
+Support for grouping (`GroupBy` queries) that group by a complex type instance. The resulting SQL uses groups by all members, reflecting the value object semantics of complex types.
+
+> See [GroupBy complex types](https://learn.microsoft.com/ef/core/what-is-new/ef-core-9.0/whatsnew#groupby-complex-types) in the _What's New_ docs for more information.
+ 
+## Read-only primitive collections
+EF8 introduced support for mapping arrays and mutable lists of primitive types. This has been expanded to include read-only collections declared as `IReadOnlyList`, `IReadOnlyCollection`, or `ReadOnlyCollection`.
+ 
+> See [Read-only primitive collections](https://learn.microsoft.com/ef/core/what-is-new/ef-core-9.0/whatsnew#read-only-primitives) in the _What's New_ docs for more information.
+ 
+## Everything else in preview 4
+
+* [10 enhancements](https://github.com/dotnet/efcore/issues?q=is%3Aissue+milestone%3A9.0.0-preview4+is%3Aclosed+label%3Atype-enhancement+)
+* [15 bug fixes](https://github.com/dotnet/efcore/issues?q=is%3Aissue+milestone%3A9.0.0-preview4+is%3Aclosed+label%3Atype-bug)
+
+EF Core 9 Preview 4 (and Microsoft.Data.Sqlite) contains work from the EF Team at Microsoft (@roji @AndriySvyryd @maumar @ajcvickers @cincuranet @SamMonoRT @luisquintanilla) as well as contributions from the EF Core community. The community PRs in EF9 Preview 4 are:
+
+* @y0ung3r: [InMemoryTable: Make IsConcurrencyConflict() method more readable](https://github.com/dotnet/efcore/pull/33561)
+