A new rumor from Taiwanese Apple enthusiast blog Apple.pro suggests that Apple is currently testing three different prototypes of what will eventually become the iPhone 5. One such prototype, the report claims, features a slide-out physical keyboard similar to the one seem above (which is an iPhone 4 keyboard accessory by BoxWave called the Keyboard Buddy). A physical keyboard on an iPhone would certainly come as a surprise considering the company’s prior stance against hardware keypads, though Apple has often been known to reverse its stances where the iPhone is concerned. Apple.pro’s report states that the other two prototypes are similar in design to the iPhone 4, though at least one features an upgraded 8-megapixel camera and a thinner case compared to the current iPhone model.

[Via AppleInsider]