I don't think that getting rid of the physical home button is an aim that Apple should have. In my opinion the home button is part of what makes iOS approachable for many people who are nervous or confused around other computers. No matter how lost a user gets in an App there is always a way out, the user simply has to press the only button on the front. An interaction on a touch sensitive bezel could serve the same purpose but it's something that would have to be learnt, in comparison the home button is obvious for everyone.
This doesn't mean that I don't think that a touch sensitive bezel is a good idea, I just think that it should be a "power user" feature in addition to the home button. Swiping up from the bottom bezel to get the multitasking bar is something that I'd definitely find useful.
This doesn't mean that I don't think that a touch sensitive bezel is a good idea, I just think that it should be a "power user" feature in addition to the home button. Swiping up from the bottom bezel to get the multitasking bar is something that I'd definitely find useful.