Okay, so I downloaded their release candidate from HERE and all I can make of it thus far is Micro$oft didn't do anything new - except add a bunch of graphic gimmicks - but put Vista on steroids. The giants icons in the task bar can get to be annoying but the picture library features are, well, I must say, a bit awesome but that is about as far as I gotten into it.
So if you're a geek you may want to try it out for yourself. You'll need a DVD drive to copy the OS from them and for the whole ISO/DVD copy bit DO NOT use ISOBuster (they hook you in and try to milk you for $30 to unlock the key) try Free ISO.com (I'm to lazy to google the link) and give it a go - takes about an hour to install plus going on line for a anti-virus program that supports Windows 7.
It's definitely different but I've yet to be impressed with it thus far.