Extension Types Are No Longer Coming in C# 13

Summary

The main theme is the postponement of C# 13's major feature, extension types, due to the need for further development. This was announced in an update to C# 13's preview features, with a promise of a well-cooked feature rather than a half-baked one, likely appearing in an early .NET 9 preview. The practical takeaway is Microsoft's transparency with MVPs and the importance of delivering high-quality features even if it means delays.