Right, go download it from the WordPress.org website. If you’re looking for a localized version it might be unavailable for a while so you’ll have to wait, although the Russian one has been shipped already.
The new interface is fantastic, although I’m used to that already since I’ve been working with RC’s locally for a while. And the credits screen, ah the credits screen! Love to finally see my name in the credits screen :)
I won’t tell you about the all the new features of 3.2 since you probably know them already, instead, I’ll give you a few awesome links that cover the 3.2 release and keep your eye on the download counter — my bet was 300K in the first 24 hours.
And don’t forget to fill out this survey if you do WordPress for a living! Cheers!