The newest iPhone 6 concept shows off a 16-megapixel camera, slim design and touch-sensitive home button.

The new concept is courtesy of also Brazilian concept artist Arther Reis and it shows a thinner and slimmer design that is 6.1mm thick.

The design looks like the iPhone 5's with an aluminium rear plate. At the bottom of the device are stereo speakers, Apple's Lightning connector charger and USB port, alongside a 3.5mm headphone jack.

On the left side of the device, there is separate round volume up and down buttons and the screen unlock key. At the back, there is an iSight Pro camera, with 12-megapixels of photo joy and f/1.8 aperture

The new Home button is a touch sensitive panel along the bottom of the screen. You can just touch anywhere and you will be taken to the Home screen.

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.

The Apple chief Time 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."

It seems that the reports on the delayed release date of Apple products proved to be true. A number of analysts claimed that Apple's smartphones are delayed due to "production issues".