Personally i'm greatly please by they fact that AU will be staying away from the standard archetypes. I would rather buy a book full of completely new stuff, rather than some new, some rehashed. It's all about the options.
This is also precisely the reason I'm not particularly enthused about 3.5, it is a rehash. Fair amount of rules changes (perhaps even enough to call it a new edition), but in the end I pretty much already have everything that will be in that book, so why bother.