All the rumors are now starting to refer to the forthcoming phone as iPhone 6. And the latest rumor, courtesy of Forbes, is that it will be just 6 mm thick.
That's slightly less than a quarter of an inch. By comparison, the iPhone 5s is 7.6 mm thick. And the iPhone 3GS was 12 mm thick—twice as thick as the forthcoming phone. This will be quite a trick, especially since the rumored iPhone 6 is said to come with larger displays of 4.7 and 5.7 inches. Forbes says the new phone has been dubbed "iPhone Air."