Well, its downloaded and installed, still brushed metal Jason.
A straight upgrade from 49 worked fine, didnt have to do a clean erase and install.
Cant see any radical differences, although networking seems a bit more reliable, no blank empty network folders.
All the apps that were fixed under 7B49 are still working, InDesign, toast etc. and the problems I had with Entourage crashing under 49 seem to have gone away.
I'm guessing that most of the updating is under the hood stuff...