According to MacRumors one of its readers contacted AT&T after seeing his eligibility date for an upgrade pushed back by five months. Apparently, AT&T told the reader that the reason the upgrade date wash pushed back by five months was that Apple had notified AT&T that the date for the launch of the iPhone 5 had been pushed from the normal June or July launch. That isn’t a direct admission of the iPhone 5 landing in September, but it would certainly fit with the other reports surfacing.
Supposedly, this customer was told by an AT&T rep, “Apple has informed us that they do not plan to release the iPhone in the June to July timeframe, though there will be a newer version in the future. Unfortunately, we have not been given a release time for the new phone. We will release this information on our website when it is available to us.” Take all this with a grain of salt naturally; the reps at AT&T are often clueless.