CiccareseDesign has created high quality renderings of the iPhone 5 based on leaked case designs. Interestingly, at the time these design specifications were posted MacRumors said they “received a reliable tip that this is not what the iPhone 5 will look like.”
The images after the break
The final dimensions of the new design are calculated to be: 4.33″ x 2.36″ and .27″ thickness at the top and .21″ at the bottom In comparison, the iPhone 4 dimensions are: 4.5″ x 2.31″ x .37″. So the new design is actually shorter than the existing iPhone 4, but slightly wider and thinner.
Source: Macrumors