Microsoft has released .NET 11 Preview 3, introducing significant SDK enhancements such as signed container images and improved solution filters that can be edited via the command line. The update removes preview API opt-in requirements, allowing for smoother runtime execution, while JIT optimizations enhance performance for complex tasks. Key features include C# union type support for better data modeling and Zstandard compression in ASP.NET Core to optimize payload sizes. Developers are encouraged to install the latest SDK or Visual Studio 2026 Insiders to take advantage of these new capabilities before deploying production code
.NET 11 Preview 3 released
Microsoft has dropped .NET 11 Preview 3 with tangible SDK upgrades including signed container images and CLI-editable solution filters. The runtime finally removes preview API opt-in requirements while JIT optimizations sharpen performance for complex logic switches. C# adds union type support to model data states more accurately, and ASP.NET Core introduces Zstandard compression to reduce payload sizes. Teams looking to test these changes should install the latest SDK or Visual Studio 2026 Insiders before moving forward with production code.
