Isn't that blatantly copying Apple's MacOS concept?
The unique thing about Windows is windows. The windowed panel tiling that allows the user to see almost all his programs at once. Those in focus and not in focus. And the concept of desktop is literally a desktop (a.k.a. tabletop). It allows the user to spread items around the desktop however messy or neat he wants to be. But there must be borders to demarcate which UI elements belong to which panel (like a document on an office tabletop). So that's where Windows stand out from its other competitors like Apple and Linux vendors in the OS market. At one glance of my desktop, I see 10 panels running, 2 of them are alerting calling for my attention, I have a file transfer, etc, etc. All spread out within a desktop the size of a monitor screen.
If Microsoft decides to go for a 'cleaner' outlook in desktop mode, might as well copy Apple's OSX design where the focus is on the app that is running rather than handling multi-tasking?