Seems like this will be the year for a Windows 7 release.
I haven't used Vista at all, and the last time I booted into XP was a while ago. But, the first thing that strikes me when I look at the screen shot is how similar it is to the Fedora look. Then again, it has been a while since I used Fedora either.
If at all Windows was trying to pick up design inspirations, they should have just google'd 'Ubuntu Screenshots'