People have started talking about the iPhone 7 even before Apple announced its latest devices – the iPhone 6s and iPhone 6s Plus – and analysts have shown interest in the future device, hinting that it could be a game-changing one that can boost the value of the company.

Surprisingly, shares of Apple Inc. (AAPL) fell drastically weeks leading up to the announcement of the iPhone 6s and iPhone 6s Plus, but bounced back after the unveiling event. It was a very unusual development because the company's stock usually surges months before a new iPhone is released.

Investors were perhaps sceptical about the new devices before its announcement for its perceived lack of novelty. But it seems like Apple will stage a comeback with its future device, which is being referred to as the iPhone 7.

There is nothing much to talk about the just unveiled iPhone 6s except its 3D Touch technology that can differentiate between a touch and a tap. It comes with some feature upgrades and looks almost the same as its predecessors but the upcoming device is expected to come with a completely different design.

Apple has been sticking to physical home button over the years despite users' demand for a bigger display but it may ditch it and go the android device way for its future devices, possibly the iPhone 7, for the simple reason that it will increase screen display without changing the overall size.

The 3D Touch technology introduced in the iPhone 6s has indicated that physical home button can be done away with provided the company finds a way to accommodate fingerprint sensor.

Going a step further, BGR has reported that the "new type of display that registers touch pressure and reads fingerprints" can replace the home button and that patents have hinted that Apple is working on such a technology for its future iPhones. However, there is no knowledge of when such a design overhaul will arrive. 

Interestingly, analyst Ming-Chi Kuo of KGI Securities recently said in a note to investors, citing sources, that Apple is planning to make its upcoming iPhone between 6.0 and 6.5 mm thick, reported DigiTimes. It means the future iPhone, probably the iPhone 7, will be as thin as the iPod touch and iPad Air 2 that are 6.1mm thick. 

Apple has upgraded camera pixel of iPhone 6s from 8 MP (seen in iPhone 6) to 12 MP but its next device could come with even a better one. Business Insider has reported citing a source close to Apple's supply chain that the company is ordering six-element lenses for its future iPhone, perhaps the iPhone 7. 

Nothing is confirmed as of now but leaks have suggested a very different iPhone 7. The new iPhone is expected to be released in September 2016, by which time the current flagship device would have completed one year in the market.