supposedly, from the rep I talked to from microsoft, I was told that I'd be able to upgrade from win7 rc, my personal advice would be to do a work around clean install, there's so many updates and such for win7rc thatit could screw up your install and it'll be more of a headache in the long run... don't worry about all the hoopla and just get the upgrade, if it doesn't work out, you could always sell it on ebay or something...