Near me the answer was 'yes'. I was surprised, too. My brother was on the hunt for one and found a long line (40 people or so) outside of one AT&T store and a shorter line (about 10 people) outside of another store. The first store's AT&T rep "didn't know" the inventory (yeah, right), so he went to the other one and was told that they were sold out. It's still unclear as to how many each store was getting, so it's possible that Apple was understocking the stores intentionally, but given the fact that one of these stores had a long line outside of it at 7pm, I'd say there was a pretty good demand on day one.
He also got a chance to play with one of the display units and was very impressed with all of the eye candy goodness. I'm still on the fence about it, largely due to it still looking like it will be a pretty closed platform.