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This article describes new features in .NET 11. It was last updated for Preview 1.
.NET 11 is currently in preview. The final release is expected in November 2026. You can download .NET 11 here.
Your feedback is important and appreciated. If you have questions or comments, use the discussion on GitHub.
.NET runtime
The .NET 11 runtime includes updated minimum hardware requirements for x86/x64 and Arm64 architectures, requiring more modern instruction sets to improve performance and reduce maintenance complexity.
For more information, see What's new in the .NET 11 runtime.
.NET libraries
The .NET 11 libraries introduce new APIs for string and character manipulation, compression, Base64 encoding, and collections. Enhancements include support for Rune-based operations in String, BFloat16 support in BitConverter, improved Base64 APIs, and new methods for ZIP archive entries.
For more information, see What's new in the .NET 11 libraries.
.NET SDK
The .NET 11 SDK introduces improvements to .NET tools and build infrastructure.
For more information, see What's new in the SDK for .NET 11.
ASP.NET Core
For information about what's new in ASP.NET Core, see What's new in ASP.NET Core for .NET 11.
C# 15
C# 15 includes these features:
For information about new C# features, see What's new in C# 15.
Breaking changes
For information about breaking changes in .NET 11, see Breaking changes in .NET 11.
See also
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