According to a recently posted job offering for a position at its Prague-based offices, Microsoft is looking to hire a Principal Software Architect for the Microsoft 365...
It's less the job post, more the implication, that they consider Rust to be better than (their internally developed) C# for one of their major products. And that I think is worth news (as it could further drive towards adoption of Rust in general).
This. C# has been losing momentum for years but some people just won't see it. I think Microsoft trying to move 365 of of it is just another big flag that devs need to start looking elsewhere.
Microsoft has been pretty open that they intend to move to Rust. They are currently re-building the Windows API in Rust as well. I do expect they will try to push .NET in that world which will be a bummer.