Yep, I’ve got two out of three computers updated from the release preview to RTM already. I’ll be upgrading the third later today. Look for a blog post from me in a day or two about what I like and don’t like.
i will install it on one of my free hard disk and give it a go too.
By the way, mrdenny posted his thoughts on his blog: http://itknowledgeexchange.techtarget.com/sql-server/my-first-days-with-windows-8-rtm/