The next iPhone is still quite a ways off in the future so the exact details surrounding it are still a little bit sketchy but it seems that we may have found one interesting piece of information about it. A group of suppliers have reportedly been preparing for the next iPhone by building the necessary hardware and it looks like the screen size is going to change a little bit.
According to various Asian sources the screens being built for the next iPhone are actually 4″ screens, rather than the current 3.5″. This would be a significant change from the current screen size so if the reports turn out true users will likely be very surprised. So far Apple has not said anything about the reported screens or the potential size change so until some official information is available this is just speculation from various manufacturers.