None of it is ever real. People post a ton of “concept” previews, that never look anything like the final product, because M$ are more concerned with selling your data, than making a functional OS
My prediction is that windows 13 will stream from the cloud, your "windows" on your computer will be just a lightweight Linux OS branded by Microsoft to stream a windows VM from azure.
I'm still waiting for the Libre Office citrus UI... Although LO did manage to get their version of a ribbon into it. It's still not quite there for me, though. Their icons are not as good and I get lost in their design choices.