Recently posted on Jakob Nielsen's website:

Bottom line seems to be the UI is fairly non-intuitive and hard to use...worse on non-tablets than the Surface tablet. May explain the recent leadership changes at the company.
Microsoft's Windows Boss Is Out - Digits - WSJ

I haven't tried it out yet except to muck around on a display model at WalMart while the wife was shopping with the teenage daughter...

Anyone out there have experience with upgrading a Windows 7 box to Windows 8? I gave up on upgrading existing Windows OS's about 10 years ago other than installing service packs when they come out.