We have infused AI into every layer of Windows

I sure hope not. I don't want Windows to just decide to delete my hard drive because it feels like it.

We are introducing Windows Semantic Index, a new OS capability which redefines search on Windows and powers new experiences like Recall.

You could also improve Windows search by contracting with voidtools and integrating Everything. While you're at it, maybe ditch the bing searches, and other useless search results?

Anyway, the rest of the article seems to go into actual dev-oriented details, and there's some interesting bits like enabling certain AI acceleration features on the web (probably only in Edge though...), for what that's worth.