Apple's next generation iPhone may arrive later than expected, with a new report saying the handset will not go on sale until October.

Citing a source familiar with Apple's plans, John Paczkowski of All Things D reported on Monday that Apple's fifth-generation iPhone will arrive in October. Separate sources reportedly said that the device will arrive later in the month.

Previous reports have claimed that the iPhone 5 will debut in September. Beyond that, AT&T employees have allegedly been prohibited from taking vacation during the last two weeks of September, which has reinforced the claim that the new iPhone will launch in that timeframe.

"Sources with knowledge of the situation say reports claiming AT&T has blacked out employee vacations during the last two weeks of September in preparation for the retail debut of the next iPhone are misinformed," Paczkowski wrote.

An October launch would be later than most expect, and much later than the typical June-July timeframe that Apple has used to launch new iPhone models in years past.

At this year's Worldwide Developers Conference, Apple did not unveil any new hardware. Instead, the company showed off iOS 5, a software update it promised is coming this fall, presumably alongside the next-generation iPhone.