OpenOffice 3.0 is now available for download. Get it at openoffice.org/
Demand for downloads was so high that it crashed the website. I still managed to download it a few hours ago with no problems. You could also download it via a BitTorrent.
I haven’t really delved into any of the new features, but the interface has been updated with a more modern look, while all the menus and icons that used to be there seem mostly the same.