We know iPhone enthusiasts are eager to be the first to get their hands on the new iPhone 3G S. Beginning June 19th, the iPhone 3G S will be on sale at AT&T and Apple stores around the country. But it is still unknown whether it will sell out or not. To avoid the long lines and disappointment of a sold out iPhone, AT&T is offering people a choice to preorder to device for themselves. Starting today at 5PM EST, you can go into an AT&T corporate store and preorder a new iPhone. If you want to order online you will need to wait until later tonight. All preorders will be processed on a “first come, first served” basis beginning June 19, but we don’t see this iPhone selling out.