I'm being told by an assistant manager at the local AT&T store that when pre-ordering from Apple, the option to keep your unlimited data plan will not be there. He says that to ensure I keep my unlimited plan, I need to come into the store to pre-order then come in again on launch day to pick it up. Is this true? I've read conflicting opinions and reports by searching the threads here on the site. I really just want to pre-order from Apple and have it shipped to my home on launch day, and want to make sure that I can do that and keep my unlimited data plan.