MacRumors paid designer Ferry Passchier to develop renders of both phones, based on the schematics. We can see the more rounded corners, smaller top, bottom and side bezels, and a power button that is moved from the right side to the left side of the device. And similar to some iPhone 6 cases that we've seen, the flash has reverted back to a round design.
There has also been talk that Apple will release the 4.7 inch Apple iPhone 6 this year, with the larger model coming to the market sometime next year.
Based on leaked schematics, this is what the Apple iPhone 6 might look like
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