It's been polished a bit more, graphiclly. It is an update, so B2 is needed to install it. Good thing is, if beta 2 is already installed, you do not need to re-enter your beta key, and it also extends your timebomb.
I dont see any support for PDF, which is sad, and publisher and info path are the only programs that looks as if it has not inherited the new office 2007 look on the menu bar
Batcave has both!