Just installed it on my main desktop, over the top of the Beta version. One minor glitch part way through, but all else seems to be working fine. It's fixed some of the bugs I had with the Beta. I was a naughty boy and didn't do a clean install - there's too much stuff on there, and life's too short.
It preserved my dual-boot, so I can still run XP Pro if I want to. I can't see me wanting to do that, though.