Dansante, I was in the same situation as you. Ordered the 4S through ATT Premier. I did get the confirmation email and have been checking on my order status. Order status did say "Received" but now all it says is "Pending". So I called the ATT Premier customer number, punched in my web order number, and got a message saying that the order has been processed and will be shipped shortly. I checked my credit card just to see if there are any charges or pending charges and nothing. But, I think I read somewhere that my credit card won't get charged until the phone is shipped.
Edit: I JUST received an email as I was typing this reply that my CC has been charged for the amount of the Iphone!
I am finally getting this same automated response from the customer service number! Based on your experience hopefully the website will update soon, too. Looks like my order has been found! Thanks to everyone for your suggestions and advice. It's certainly disconcerting when your order seems to disappear and drop off ATT's radar and I appreciate everyone's advice!