Is this the next iPhone? As we have seen in the past, Apple tends to create a new body for the iPhone with the release of each new version (i.e 3,4,5), which means this most recent mockup might be correct.
The supposed size of these devices would be 5.5″ and 4.7″, so this could possibly be the iPhone 6 and 6C.
Two analysts with a good track record for predicting Apple iPhones have weighed in and they believe that Apple will release a 4.7″ iPhone by September 2014.
As we get closer to September we will see more and more rumors about what Apple will do with the new iPhone 6.