Instapaper developer Marco Arment has spotted two new iPad device codes in his logs that he believes represents the long rumored "iPad mini". The new identifiers found were "iPad2,5" and "iPad2,6". As Arment notes, the iPad2,1 through iPad 2,3 designations are known to represent the iPad 2's WiFi, GSM and CDMA models. The iPad2,4 represents a die-shrunk/cheaper version of the iPad 2 that was released alongside the 3rd generation iPad. Finally, the 3rd Generation iPad carries a designation of iPad3,x.