Apple's smartphone dubbed as iPhone 6 and iPhone 5S is set for release in September, according to a reliable website.

Japanese tech blog Macotakara, which has a good track record in Apple rumours, claimed that the next generation of iPhones will make their debut later this year.

It is initially reported that the new iPhones will be launched in June along with the upgraded iOS. However, other reports stated that the devices will make its debut in September.

However, Apple's chief Tim Cook subtly suggested that the company will not release a low cost iPhone or a phablet this year. Tim Cook stressed that Apple invests time and effort in making each phone that serves various markets rather than making a myriad of phones aim to serve specific users.

When asked by Walt Mossberg if Apple would come out with multiple iPhone models in the same year, Tim Cook responded, "We haven't so far, that doesn't shut off the future."

Tim Cook explains that it takes a "lot of really detail work to do a phone right when you manage the hardware, the software and the services around it."

According to Cook, Apple chose to put their energy into getting those things right with the iPhone and in doing so focused on a single iPhone model rather than a collection of iPhones.

There is no need for Apple to announce multiple iPhone models, specifically one with a larger screen, just because the competition is doing this. That said, when Cook relates the reasoning to the iPod portfolio we begin to see where Apple could offer an iPhone in multiple sizes. Cook states, "My only point is these products all served a different person, a different type, they served different needs."

Cook also dropped several hints that the upcoming iPhone 6 and 5S will be released later this year. Cook said that no new products are to launch before the end of the year.

Cook also subtly dented rumours that the iPhone 5S could launch as early as June. "Our teams are hard at work on some amazing new hardware, software, and services that we can't wait to introduce this fall and throughout 2014."

Rumour has it that the next iPhone will feature Retina or IGZO screen display, A7 quad core chip processor, iOS 7, 128GB internal storage, 13 mega-pixel camera, and longer battery life. The lack of NFC support on the iPhone 5 was one of the biggest criticisms aimed at Apple's smartphone.

Meanwhile, the cheaper iPhone 5S is rumoured to sport a plastic casing, 4-inch screen display, dual core processor and 8-megapixel camera.

However, Apple did not give an official statement on the rumours surrounding iPhone 6 and iPhone 5S.

Below of are the top five rumoured features of the iPhone 6 and iPhone 5S that will surely beat the Samsung Galaxy S4.

New Screen Display - There is a wide array of rumours on the screen display of iPhone 6 and iPhone 5S. Reports claimed that the new iPhones will have double the pixels of its predecessor. Another report claimed that the Apple's smartphones will feature a larger edge-to-edge display.

However, Apple is not ready for a higher resolution or larger display in the iPhone yet. Cook reiterated his disapproval of the larger displays found in mobile phones stating, "A large screen today comes with a lot of trade-offs." Cook went on to list color, white balance, reflectivity, battery life, brightness and longevity of the display before praising the iPhone 5′s Retina Display.

3D Camera - An iPhone concept image showed that the handset will sport a 3D camera paired with 3.2 megapixel FaceTime HD camera. Amateur and professional photographers will be delighted with the new feature of iPhone 6. The patent shows a system that would allow the iPhone to remotely control other illuminating hardware, which is a similar thing that professional photographers do when taking images with a camera.

Fingerprint Sensor - It is reported that Apple is planning to include a fingerprint sensor in Apple devices for added security.

Smarter Control Features - A new approved patent from Apple will enable users to operate their devices with mere scratches or tap gesturing. The patent discusses acoustic input devices and basically means that iOS devices could also be used with sound inputs that would be transmitted via the casing that would then correspond with certain functions.

Wireless Charging - A new concept of iPhone is making the rounds showing the device capable of wireless charging. One of the most common complaints with Apple devices like iPhone is the fast depleting battery. However, with wireless charging, users will enjoy longer battery life.