I couldn't wait, I've pre-ordered the 5-disc set (after doing some subtle digging to find out if it was already on anyone's list for me)
As for the differences, I haven't seen the Final Cut yet, but I read that apart from cleaning up the print, Scott made a few little differences, like putting some of the violence back in, and a few little CGI tweaks, like making the difference between Zhora and her male stunt double much less obvious. It wasn't really about adding new scenes.