On September 14th, Microsoft announced the first 'go live' version of .NET 6: https://devblogs.microsoft.com/dotnet/announcing-net-6-release-candidate-1/
.NET 6 not only introduces some new C# 10.0 language features, it also contains some interesting security updates and some optimizations for faster load times. I can't wait to use it on a project, but for now I will just have to be content with .NET 5 for a while longer.