One of the few innovations this years MWC was Asus launch of the PadFone.
It is basically a phone and a 10" Tablet where the phone use the tablet as a docking station. ASUS - Mobile- ASUS PadFone
This allow you to share your 3G connection between the two devices and use the device that is most feasible at any point in time. I am sure that this is possible already but to have it as an "out of box" solution actually makes some sense. It will be exciting to see if this catches on.