Ya I went into an AT&T store today also and was told the same thing.
Specifically, I was trying to find out how much stock they would have on Friday since I can't go until after work (6:00pm).
Unfortunately, I was told they were only had a hundred or so today, and were expecting more every day, but that still only means each store would get like 200 or 300 for Friday, which seems kind of low.
It might sell out by the time I get there around dinner time!