Axum has been released in Microsoft DevLabs
What is Axum:
Axum is a language that builds upon the architecture of the Web and principles of isolation, actors, and message-passing to increase application safety, responsiveness, scalability, and developer productivity.
**Axum aims to validate a safe and productive parallel programming model for .NET.
you can find more inforamtion about Axum here
And here is Axum blog