http://www.ilounge.com/index.php/articles/comments/the-complete-guide-to-iphone-os-30-for-iphone-and-ipod-touch/ I don't have it, however this website explains it completely with pictures.
I have it. The new features are fantastic, but I would wait until the official release if you are a consumer. It is surprisingly slugish and buggy for me. But that's NOT an official statement. Might just be my device...