Im using 185.20 in Windows 7 7000. This build just rocks, blows away Vista by a mile and XP too
Playing COD WAW, L4D, GTA IV, FC2 all run great!
This is going to be the OS to have.
BTW I disabled all the pinned crap and just setup my own Quick Launch. I'm not a fan of the new large icon'd taskbar with the pinned feature. I prefer my Quick Launch still.