According to Rose, the iPhone will set itself apart from most music-playing phones by including two batteries. One battery will power the cell phone part, while the other will take care of the music-playing part, allowing users to listen to music without having to worry about their phone's battery life. Other features will supposedly include a slide-out keyboard and perhaps even a touch-screen display. Rose says the iPhone will launch in January with 4GB and 8GB capacities at prices of $249 and $449, and that it will be available through all phone carriers. Thanks to The Inquirer for the tip.