I am a PC fanboy, and this looks awful.
The fundamental purpose of an OS for me is to provide and invisible interface to access all of MY stuff MY way. It looks like Microsoft is trying to turn the OS into an application itself. This is not what I want, I want to have a clear, clean, fast, customizable utility to do what I desire.
I want to see my OS do all the back-end stuff (anti-virus, backup, file management, etc.) in the cleanest, fastest way possible. These things should happen in the background, and not distract me from doing the things I want (games, internet, Word, Excel, etc.).
The implication here is you are supposed to *use* the OS as an application. No thanks.