With rumours expecting the next iteration of the Apple iPhone along with the cheaper and affordable iPhone to launch on September 10, sources now claim that the next version of the iOS 7 would be released simultaneously.
According to sources, the iOS 7 has the general availability date marked as September 10, which is apparently the launch date of the new iPhones. This would mean that the iOS 7, which would be announced at the event would be available to iPhone users even before the new iPhones get released into the markets.
However considering the new iPhones are expected to be released globally on September 20, it is a little hard to accept that the new iOS version would be available to other users before that. However the source could be referring to the iOS 7 Gold Master (GM) instead of the General Availability (GA).