Preorders for the next-generation iPhone will begin on the same day as its announcement, September 12th, with an official launch on the 21st, say sources for iMore. The people add that a second wave of shipments, reaching international markets, will take place the first week of October, most likely October 5th. Making preorders available on the same day as an announcement would be unusually aggressive for an iPhone launch, since even iPhone 4S preorders opened up two days after an event on October 4th last year.
