iResQ got some iPhone 4G parts in their shop, including some nice pictures that maybe shows some important details of the next gen iPhone. These photos shows us the outside of the iPhone that looks slightly different then his predecessors.

The most important different is the size of the front panel, the iPhone 4G front panel seems to be about 1/4″ longer than its predecessors.

There is also a mirror-like surface directly above the speaker.

The last thing we can see is that the LCD appears to be factory glued to the digitizer. This means that the repair price of the LCD probable will go up, since both parts will have to be replaced at once.

Source [FSM]