That charging cube we've all come to know and love might be getting some "love handles." A photo out of China shows a wider charging brick with indentations on the side to make it easier to grip. This could all be speculation, but it would make sense. Apple already has a different charging adapter for the iPad, because it uses more power, and the expectation is that the upcoming larger iPhone will use a battery that is almost 50 percent bigger than the iPhone 5s. It's understandable that it might need a more powerful charger than the current model.
This could render older chargers somewhat obsolete, if the new iPhone can't be charged by them, or if it takes forever to trickle charge. Speaking of obsolete, the same website showed off a reversible USB Lightning cable. The Lightning end has always been reversible, which was a nice touch. It made the expensive switch from 30-pin a lot more attractive. But we still had to plug the USB side in the correct way. There is an effort for the next USB standard to be reversible, but that will require new ports on the next generation of computers and chargers. This effort by Apple makes existing ports compatible with the new reversible cable. It breaks the USB standard but that might not be a big deal to Apple!