The changes in the iPhone models expected to be released later this year will be less noticeable than last year’s. The phones are expected to feature Apple’s Force Touch technology that can distinguish between a light tap and deep press, allowing users to control a device differently depending on how hard they push on the screen, according to people familiar with the matter. Apple has added this feature to the Apple Watch and MacBook laptop computer.
I can see merit with Force Touch when used with trackpad on a MacBook for certain applications. But I greatly dislike Force Touch on the Apple Watch in every interaction I've had with it, simply because I never know if engaging Force Touch will do anything. Sometimes it does, sometimes it doesn't. To me, Force Touch is bad for all the reasons Android's Menu was bad.
It almost feels like someone at Apple looked at the non-back lit Menu button on the Galaxy S3 and thought "what if we take this hidden interface mechanism that when triggered may or may not do anything and allow developers to do that everywhere?!".
Android ditched the Menu button for a reason, and app usability is undoubtedly better for it. If all Apple do is bring the Watch's Force Touch to the iPhone, I think there's a real risk this will simply lead to app mechanics becoming much more obfuscated and in turn interaction becoming much more complicated.
Clearly Apple think the value to be gained from adding Force Touch to their most popular product will outweigh any potential negatives. We'll see how it plays out.