iPhone 6 release date may happen in September next year alongside Apple's smartwatch iWatch.

New reports claimed that a new iPhone will be released in the summer of 2014 with the rumoured iWatch. This rumour emerged after Apple CEO Tim Cook at the company's Q4 2013 earnings call said that Apple looks out for "significant opportunities ahead of us in both current product categories and new ones."

Mr. Cook stood by his April statement that new Apple products would be out this fall and across 2014, hinting that all-new product categories are likely on the docket for next year.

"In terms of new product categories, if you look at the skills Apple has in hardware, software and services and an incredible app ecosystem, these set of things are very unique," he said. "We obviously believe that we can use our skills in building other great products that are in categories that represent areas we do not participate in today. We're confident in that."

Rumours claimed that Apple is about to release the iWatch and its own phablet - iPhone 6. However, other reports stated that Apple is working on its own TV product, generally referred to as the iTV, as well as a gaming device. Tim Cook did not give out specific details of the products the company is about to release.

Rumours claimed that iPhone 6 will come with larger screen display ranging from 4.8 to 6 inches. The rumoured iPhone may also retain some of the features of iPhone 5S such as the 64-bit A7 processor, M7 graphics chip and the fingerprint sensor.

It is also speculated that the next iPhone 6 will come with a screen display using Sharp's IGZO technology as well as Near Field Communication. The latter is already available in various Android devices.

Previous reports stated that iPhone 6 release date will be this March. However, according to Apple, iPhone 5S sales are doing really well. The sales figure for the iPhone 5S remains high and Apple announced that it is the best-selling iPhone to date. The gold iPhone 5S has been sold out everywhere, with new stock not available until November or later. A gold-colored option will likely be as successful as the iPhone 5S. Due to strong sales, we may not see the iPhone 6 early next year. Thus, latest reports suspected that iPhone 6 release date is in September.