Today, we are excited to announce the fourth preview release of .NET 11! This release includes improvements across the .NET Runtime, SDK, libraries, ASP.NET Core, .NET MAUI, C#, Entity Framework Core, and more. Check out the linked release notes below and get started today.Download .NET 11 Preview 4This release contains the following improvements.LibrariesProcess gets a major API expansionSpan-based Deflate, ZLib, and GZip encoder/decoder APIsFloating-point hex formatting and parsingSystem.Text.Json improvementsSee all library updatesRuntimeRuntime libraries are now compiled with runtime-asyncJIT optimizationsHardware intrinsics and code generationSee all runtime updates SDKdotnet watch adds device selection for .NET MAUI and mobile projectsFish shell completions match Bash, Zsh, and PowerShelldotnet reference and similar commands fall back to the current directoryOpenTelemetry replaces Application Insights for CLI telemetrySee all SDK updatesC#Clearer diagnostic for misplaced #! shebang directivesOpt-in compilation cache for the VBCSCompiler build serverSee all C# updates ASP.NET CoreHTTP QUERY in generated OpenAPI documentsSupplyParameterFromTempData for BlazorServer-initiated Blazor Server circuit pauseMCP Server template ships with the .NET SDKSee all ASP.NET Core updates .NET MAUIdotnet watch for Androiddotnet watch for iOSSee all .NET MAUI updates Entity Framework CoreApproximate vector search for SQL Server 2025JSON mapping is fully integrated into the relational modelTemporal period properties can map to CLR propertiesdotnet ef reads defaults from dotnet-ef.jsonSee all EF Core updates Get startedTo get started with .NET 11, install the .NET 11 SDK.If you’re on Windows using Visual Studio, we recommend installing the latest Visual Studio 2026 Insiders. You can also use Visual Studio Code and the C# Dev Kit extension with .NET 11.The post .NET 11 Preview 4 is now available! appeared first on .NET Blog.