The next-gen iPhone will retain 4.7 inch and 5.5 inch screen sizes with no flagship model being offered in 4 inch screen size. While the new bigger screen sizes have clearly been a grand success for Apple there is certainly still a large customer base who prefer 4 inch screen size for their smartphones. It is highly likely that the company will continue to sell iPhone 5S and 5C to fill such demands.

iPhone 6S could include Force Touch, Apple first introduced this new method of interacting with touch-screens with the Apple Watch. Force Touch could open new user interface possibilities on the iPhone such as better support for handwritten signatures.

The company is expected to offer iPhone 6S in rose gold colour to match the Apple Watch Edition. Currently the iPhone is available in space grey, white and gold.

Apple will stay committed to improve the camera in the new iPhone 6S with a new 12 MP sensor. It’s possible that iOS 9 could include some software enhancements specific to the new new sensor.

Just as with all previous “S” versions Apple will upgrade the processor in iPhone 6S. It is said to include new A9 processor with 2GB LPDDR4.

Other features likely to be included in iPhone 6S are: improved recognition rate of Touch ID, gesture control support and one microphone near the speaker to enhance voice quality.

Kuo predicts 80-90 million iPhone sales in 2015. Apple could be looking at a September timeframe for iPhone 6S launch date.

What do you think about the predicted features of iPhone 6S? Let us know what you think in the comments below.