Showing archive results for 2026

ASP.NET Core 2.3 will reach end of support on April 13, 2027. Learn what this means for your applications and how to upgrade to a modern supported version of .NET.

C# 15 introduces union types — declare a closed set of case types with implicit conversions and exhaustive pattern matching. Try unions in preview today and see the broader exhaustiveness roadmap.

Announcement of Version 2 of Generative AI for Beginners .NET, a free course rebuilt for .NET 10 with Microsoft.Extensions.AI, updated RAG patterns, and new agent framework content across five structured lessons for building production-ready AI apps.

After ten months using GitHub Copilot Coding Agent (CCA) in dotnet/runtime, the .NET team shares data-driven lessons on cloud-AI-assisted development.

Learn how custom-built AI agents are dramatically improving the .NET MAUI contribution workflow, reducing issue resolution time by 50-70% while increasing test coverage and code quality.

Guest blog post on building a real time assistant using OpenAI Realtime API using .NET, F#, Microsoft.Extensions.AI and .NET MAUI.

See how the Upgrade agent helps you assess apps, create plans, and modernize .NET projects from Visual Studio, VS Code, GitHub Copilot CLI, and GitHub.

An out-of-band release of .NET 10.0.5 to fix a critical debugger crash affecting macOS users with Visual Studio Code.

Find out about the new features in .NET 11 Preview 2 across the .NET runtime, SDK, libraries, ASP.NET Core, Blazor, C#, .NET MAUI, and more!

A recap of the latest servicing updates for .NET and .NET Framework for March 2026.