Comments like this drive crazy. A few years ago people were claiming Apple would NEVER release a phone with a screen larger than 3.5" ... and then reality set in, and market demand spoke. People want larger phones, and limiting consumer option doesn't make any sense. How the hell would a larger screen ruin the Apple experience? There isn't one logical answer to that question. People have different hand sizes, eye issues. Some business people would welcome the larger screen for on-the-go work but don't have the space to carry a second large device (iPad Mini). A large screen phone is a great "all-in-one" device.
A phone larger than 4.7" will come, if it's not this launch, then next one. Apple seems to lag behind literally every other phone maker in screen size (and most other features these days) so worst case we'll have a screen larger than 4.7" by 2016.