It seems like Force Touch on the next generation iPhone is almost certainly coming but 9to5Mac is reporting new take on it. According to their sources, iPhone 6S will incorporate a pressure-sensitive screen and likely call it a "3D Touch Display."
It's interesting to think about the possibilities of an almost multi-depth Force Touch on iPhone. We've seen what a Force Touch does on Apple Watch which includes mostly bringing up more options for the app that you're in. On the Mac, Force Touch seems mostly under utilized, having only select placement on certain apps in OSX.
On the iPhone, it looks as though this will be a key marketing point for the 6S. The most intriguing feature for me would be the ability to Force Touch an app on the home screen and shortcut to certain section of the app. This would eliminate a few taps here and there which could improve navigation in iOS. It would be interesting to see if apps would let you customize the shortcut and where it takes you.
While Android has been a power user's mobile OS of choice, iOS has been integrating some fantastic features to satisfy certain groups of users. Extensions were added in iOS 8 and for me is now an integral part of the OS. Using the 1Password extension in Safari is now essential for navigating the web on iOS. Same goes for Spotlight. Most of the apps not on the first page of my home screen are stored in folders. I rarely navigate through these to find apps. Instead, a quick swipe down and search in Spotlight is the way to go.
Both Extensions and Spotlight are not necessary for average users but it does show that Apple has not forgotten the above-average user of iOS. These features are mostly hidden unless called upon to not get in the way. I hope that this rumored "3D Touch Display" will be yet another way for users to quickly navigate the OS with losing any of the simplicity brought from the original home screen concept.