you'll most likely not see it in stores until the 29th.
verizon (and most companies) generally won't advertise something you can't go and buy after seeing the commercial. i'm pretty sure you'll see a new version of the droid commercials after the 29th.
even the droid didn't get a proper commercial until after it came out, they just had the teasers for it because it was their first droid.
because to the general public, if they like the commercial enough to decide to make the purchase, and then realize they can't have it, it frustrates them.