Its only been a few months since Apple released the iPhone 5, but these leaked images could indicate that Apple are already working on the iPhone 5S

EtradeSupply posted these images believing that they are the iPhone 5S for two reasons. One is that the part number has an 'X', which has always been indicative of a prototype and the second reason is that the screw placements have changed.

The problem with these images is that they might be prototypes of the original iPhone 5 and not the 5S. Apple would normally release the new iPhone in the autumn time, but this could see a change in Apple's normal pattern.