Have any of you been a part of an iPhone launch before? None of this is unusual. As for the tracking numbers for some and nothing for others, remember when Macrumors posted the story that phones were already shipping to the US before preorders even started? People's phones will be coming from all over the place, so shipping times will be different. But USUALLY everyone will get their phones by the date on their confirmation, if not sooner. I've seen the phones from the carriers, especially Verizon, show up a day early plenty of times (when I ordered my iPhone 4 it came two days early).
Just wait until about Wednesday when some people don't have tracking numbers and everyone is freaking out.
The problem is the reps half the time are just trying to get you off the phone and don't have a clue. And you've also got a couple of trolls in these threads spreading the fear. Just chill. Start freaking out Friday when your phone isn't "Out for Delivery."