What's new in the .NET 11 runtime
The gist
Microsoft released .NET 11 at its .NET Conf 2026 virtual conference, with updates across C# 15, ASP.NET Core and MAUI.
It is a two-year STS release, so teams must plan upgrades sooner than with LTS versions.
How it unfolded
- Feb 11, 2026.NET 11 Preview 1 was released; early developer reaction was described as notably skeptical, focused on increased language complexity and the rapid pace of major version updates.
- Feb 26, 2026ASP.NET Core in Preview 1 brought new Blazor components, improved navigation and WebAssembly changes.
- Apr 29, 2026.NET 11 Preview 3 shipped with updates across runtime, SDK, MAUI and ASP.NET Core.
Key terms
- STS
- A testing stage of software development in which a limited group of users tries a product before its public release.
- LTS
- A product lifecycle policy where a stable software release is maintained longer than the standard edition.
- CoreCLR
- The virtual machine component of Microsoft .NET that manages execution of .NET programs.
Source: Wikipedia