A lot of leaked iPhone parts have surfaced over the last few months. With the design below being the most credible and likely, the Japanese blog iLab Factory has allegedly assembled all the parts leaked over the last few months of the upcoming phone to give you an idea of what the next generation iPhone will likely resemble.

An aluminium backplate would help strenghen the device over the current glass back that can be smashed with one drop.

Keeping the square design of the current iPhone it also still keeps the locations of the lock button, volume buttons and camera.

The bottom shows a redisigned smaller dock connector that gives room for the 3.5mm headphone jack to be relocated on the bottom. There is even enough room for a better speaker and microphone design.

This alleged new iPhone has redesigned internals to accomadate the new design.

A beautiful 4" screen to compete with android phones and a relocated Facetime Camera can be seen on the front.

As you can see it looks very similar to the iPhone 4S while borrowing from the now retro Original iPhone with the two toned colour scheme.
Overall this alleged New iPhone has a much better design with it looking much stronger and higher quality than the shoddy 4S. If these rumours are true one might also expect 4G LTE, A5X or A6 chip, a better camera and possibly even NFC.