I preorded the iPhone 4 yesterday and got a confirmation email saying that once the phone is shipped they will send me "additional information, including your phone number." I realize that the SIM cards are different but am I going to have to "change" phone numbers? Will there be a way to transfer my phone number to the new phone? I'm getting the phone shipped to me and I realize all of these issues would be dealt with if I just picked the phone up from the store. I really don't want to do the cutting of the Mini SIM mod I've seen around the interwebs.