Microsoft has released .NET 11 Preview 6, with updates across C#, ASP.NET Core, .NET MAUI, and Entity Framework Core. C# adds extension indexers and built-in union support types. ASP.NET Core brings async validation, automatic CSRF protection, and OpenAPI 3.2 by default. MAUI extends CollectionView to Windows, and EF Core adds FULL OUTER JOIN translation. By Almir Vuk