Apple has been maintaining utmost secrecy on its upcoming devices, giving rumourmongers ample space for speculation. The strategy may give free publicity to devices owing to the curiosity factor it brings, but it has caused confusion among iPhone fans and gadget lovers alike.

They are confused whether the Cupertino giant will release the iPhone 6s, iPhone 6s Plus and the iPhone 7 this year.

The initial hype was that Apple might release its flagship smartphone, the iPhone 7 this year with significant feature upgrades. But it eventually died down over time. Now, it is almost certain that the smartphone maker will release the iPhone 6s and iPhone 6s Plus this year and push the iPhone 7 to 2016.

Reports of Apple releasing the iPhone 6s and iPhone 6s Plus this year makes sense if one is to go by the trend set by the iPhone 5s and 5c, which were released in 2013, a year after the iPhone 5 hit the stores.

Nobody is sure of the release date of the iPhone 6s and iPhone 6s Plus but a report by M.I.C. Gadget has claimed that it will be unveiled on 11 September and released on 18. Telegraph also reported that the device will be up for pre-orders on 18 September and made available in stores on 25. 

Apple's upcoming devices are expected to be powered by an A9 chip, run on the company's new operating system iOS 9, and come packed with 32 GB internal memory, 2 GB RAM, 12 MP camera, improved fingerprint censor, Force Touch and stronger aluminium alloy chassis. The iPhone 6s is expected to sport a 4.7-inch display, while the 6s Plus is expected to have a 5.5-inch display.

According to a report by M.I.C. Gadget, the iPhone 6s will measure 7 mm thick (6.9 mm thick in the iPhone 6), and the iPhone 6s Plus will be 7.13 mm thick (7.1 mm thick in the iPhone 6 Plus).