So, I went to Best Buy to get the Nexus S on "the deal".
The wireless department was a mob scene, with everyone standing in line just for the Nexus S. Of course, they ran out of Nexus S for ATT, long before I arrived at the head of the line. That, alone, took almost 2 HOURS, because they only had 1 employee trained in wireless sales procedures. Regardless, I was assured that the phone would be shipped to me, no problem, with a full warehouse stocked.
Today, I receive my order confirmation via email, and I decided I ought to follow up on it, to check the details of my order. To my horror, I discover they have shipped me the T-mobile version!
I phoned customer service and am told that this model works on ATT. I reply that it only gives EDGE speeds, not 3G. The rep replies that it still qualifies as an ATT capable phone, and if I don't like that, I can return it to the Best Buy store. She also informs me that there are no more ATT band Nexus S phones left at Best Buy warehouses, and there is no indication in her system that they will be ordering any more.
So, those of you who have scored an ATT Nexus S should be greatful. I guess I won't be joining you.
Any of you who have been placed on a warehouse shipment had better look carefully at the phone packaging, upon arrival. You may have been bait-and-switched the way I was. The T-mobile model number is GT-I9020T. The ATT model number is GT-I9020A.