
MIC Gadget posts a photo of what they claim could represent the "iPhone 4S". The image shows what looks like a while iPhone 4 but with a slightly larger display.
Man, we dont know if this is real, but at least we can see that it has a larger display and edge-to-edge glass. Maybe its a mockup, but we are sure that its not an iPhone 4.
They offer no explanation as to how they obtained the images and don't seem that confident in the authenticity of the images. The images could obviously be easily doctored.
They also provide a comparison photo between the current iPhone 4 and the larger screen, but this time on just the screen part, not a full device:

The new screen part, however, lines up closely to the design drawings documents that were leaked in the past, which may offer some possible validity to the images.

Another recent rumor claimed the iPhone 5 would carry a 3.7-inch display, but we've since heard that report is inaccurate -- at least for the upcoming iPhone 5.
Top Rated Comments
Resizing only means having to rewrite apps if the screen resolution changes -- especially if it changes by something other than a whole-number multiple (e.g. 1.5x versus 2x). All rumors indicate a 3.7-inch screen iPhone would have the same Retina-Display resolution (still maintaining over 300dpi).
Technically their "Retina-Display" stuff is based also on typical viewing distance as well -- so a "Retina Display" iPad, iMac, or MacBook (assuming those are in the works) may not go as high as 300dpi. However, a Retina-Display iPad would like require the same pixel-doubling (2x) that was done for apps not optimized for the Retina Display until updates came that included higher-resolution graphics.
I don't think so... They skipped iPhone 2 and iPhone 3 and went right to "iPhone 4" because it was the 4th generation. Why wouldn't they call it iPhone 6 if it's the 6th generation?
It would go:
iPhone
iPhone 3G
iPhone 3GS
iPhone 4
iPhone 4S (or iPhone 5)
iPhone 6
That's because :apple: didn't kill your phone with an iOS update
It would be 4S ;)