We've talked about mobile computing for a long time, but we are now getting closer to the reality of nearly ubiquitous mobile computing. However, the form this takes may not be the form we expect. It will likely involved cell phones and PDAs (for while at least) and tablets and other devices.

Ray Ozzie has more on Extreme Mobility:

I believe we're currently in a transition period for personal computing: from a tethered, desk-bound, personal productivity view, to one of highly mobile interpersonal productivity and collaboration, communications, coordination. We're focused right now on devices and networks because we're coming at the problem bottom-up: preoccupied by gizmos and technologies' capabilities rather than focusing on how our lives and businesses and economies and societies will be fundamentally altered.