Engadget reported that Microsoft have submitted a patent for a modular phone. The phone will incorporate interchangeable modules - keyboard, gamepad, media remote or additional battery that can be placed into a sliding compartment.
It is not clear where components, not in use, will be stored. When built this phone with it's many gadgets and futuristic design might just be the smartphone of smart phones.
Engadget, Microsoft Modular Phone Patent article