I can honestly understand them not wanting to give away EVERYTHING in the Beta/Alpha...
Yet the huge differences between what we have and what the actual game is makes me wonder what the point of this Beta even was?
Not to mention there are several universally accepted faults that haven't been touched (such as the start of the game being extremely exp tight or the Stingtail quest being buggered).
The only changes I can think of brought on from the Beta were mechanical in nature such as Shields getting a guard.