Unless you have been living under a rock you'll already know that the Apple iPhone 5 has been revealed to the world it all it's "smaller yet bigger" glory. A lot of reviewers have been underwhelmed by this latest iteration of the iPhone but nevertheless it does have some enhancements over the iPhone 4S. First off it has a bigger screen, basically it's a taller/longer screen than the iPhone 4/4S. Secondly it's thinner and lighter. Last of all it's got a slightly faster chip and a slightly better battery life. These are the main upgrade points of difference but you can see all the new features on the official Apple iPhone 5 website.
If your interested to see a comparison of iPhone models you can check them out here.