.NET 11 Preview 3 Released with Runtime, SDK, and ASP.NET Core Improvements
Key Takeaways
- ▸System.Text.Json receives enhanced naming control and default handling capabilities
- ▸Runtime async APIs remove preview requirement, and JIT optimizations improve performance across switches, bounds checks, and type casts
- ▸ASP.NET Core adds HTTP/3 early request processing and Zstandard compression support
Summary
Microsoft has released .NET 11 Preview 3, the third preview iteration of its upcoming framework version. The release brings significant improvements across multiple components including the .NET Runtime, SDK, libraries, ASP.NET Core, .NET MAUI, C#, and Entity Framework Core. Key enhancements include expanded System.Text.Json control, Zstandard compression support, improved JIT optimizations for switches and bounds checks, and WebAssembly debugging improvements.
The update introduces developer-friendly features such as CLI-based solution filter editing, environment variable passing in dotnet run commands, and enhanced dotnet watch functionality with Aspire and crash recovery support. ASP.NET Core gains HTTP/3 optimizations and early request processing, while .NET MAUI receives UI improvements including new Maps clustering APIs and built-in LongPressGestureRecognizer support. Additionally, Entity Framework Core now offers more granular change tracking control and improved SQL generation that removes unnecessary joins.
- .NET MAUI introduces Maps clustering, styling improvements, and Android 17 / API 37 preview support
- .NET container images are now cryptographically signed for enhanced security
