The next iPhone won't just screw developers with its taller, four-inch display and an increased resolution of 640-by-1136 pixels (though both iOS 6 and the SDK have been discovered to be scalable for taller displays) and accessory makers with a redesigned dock connector (unless Apple provides a 30-pin dock adapter), it could as well screw repair shops (pun intended) with a special screw design calling for asymmetric heads.
As if sealing the battery and allegedly using a new in-cell display technology wasn't enough, now iPhone repair shops will have to obtain non-existent tools just to pry open the upcoming device...