I got my phone in my hands at around 9:30 am PDT, it's 2:50pm. I tried via wifi/phone first, then after a couple of attempts tried the itunes thing. I stopped briefly at 10:30, then again at noon. Spoke to an AT&T rep who saw no issues with my account and merely attributed the delay to the crush of people. I usually did get the "activation is till pending" and "email" message but I did get one message on phone that didn't say that (no sim message either, i'm migrating from a 3gs not a 4). My latest attempts are resulting in messages that say turn the phone off/on to retry or disconnect/reconnect through itunes.... no email message.
(edit) FINALLY! Now to restore from itunes and make sure old phone is backed up
(edit) FINALLY! Now to restore from itunes and make sure old phone is backed up