Mine would only allow it to ship to the address in the AT&T account. The shipping address you set in the app doesn't seem to change anything. Maybe its just a restriction enforced by the carriers.
yeah i noticed this too until after i had already placed. they send you a confirmation email and in there should be a "Order Status" link towards the bottom.
I updated my address through mobile safari. didn't work on desktop. heh
just got confirmation email from apple about the change of shipping address.