Taiwanese site Apple.pro reports that Apple has been testing three separate prototypes for the fifth-generation iPhone, including one with a slide-out keyboard.
There are three iPhone5 prototype: one is a sliding cover which is the introduction of the keyboard after the side cover
Other prototypes are said to be similar to the iPhone 4 except with an upgraded battery and apparently an 8-megapixel camera, up from the 5-megapixel sensor found on the iPhone 4's rear-facing camera. The report likens those prototypes to the transition from iPhone 3G to iPhone 3GS, with the same basic design augmented primarily by improvements in the device's internals.
As for claims of a slide-out keyboard, the rumor seems incongruous with Apple's devotion to multi-touch functionality with on-screen virtual keyboards.
[tags]iphone 5,iphone 3g,iphone 3gs,virtual keyboard,sliding keyboard[/tags]