The middle ground between every major iPhone revamp is usually one to speculate about. In the case of the differences between iPhone 3G and 3GS, these were so invisible that unless you knew that the 3GS had shiny letters, you couldn’t tell one apart from the other. A similar story happened to the differences between the iPhone 4 and 4S. It’s hard to expect any significant differences between the iPhone 5 and the probable 5S, but new leaks tease some important ones.
As it turns out, this iPhone seen in photos includes a dual-LED flash, which would be an all-time first for the iPhone line-up. Reviews have praised the night shots of the iPhone 5 to resemble those of a point-and-shoot if you activate the flash, so it seems this is on its way to an improvement. Another difference that’s noticeable is that the battery on this leaked iPhone 5S is bigger than its predecessor at 5.92 Whr.
Obviously these are just the visible changes. There could be a ton more improvements under the hood that we haven’t noticed so stay tuned for more rumors.
Source: Mac Rumors