You may have a while to wait. I have a friend who requested his copy right away in the morning, and he got his right away. I didn't request mine 'til about 9:30 AM, and I had to wait until Saturday morning to get my copy. I don't want to be discouraging, but if there was that much of a difference between two requests made a couple of hours apart, it may be quite a while until a 9:00 pm request will be fulfilled. Just speculation, but I heard they are going through these requests manually...
I would definitely wait, though. In my opinion, there's not enough differences to make it worth freaking out about. The Facebook and Twitter integration aren't even part of it yet, and I think that's one of the major points of interest for most people.
Hope you get it soon, though!