With the recent advances in nano, and biotechnology you can bet your last dollar things are gonna change, militarily and civilian-tarily. Though I don’t believe the 'look and feel' will alter all that much.
Case in point, to pardon the pun, computers get faster and components smaller, but Compaq, dell and Gateway only JUST started altering the footprint of their machine this past year. And the move to the Black/Gray color wasn’t motivated by MACs but because the beige turns yellow. People mostly hate (READ: fear) change, even if they understand the why's and how's.
They'll figure out how to mass-produce the silicone cube as a data storage device. (1 inch square silicon cube that can hold the contents other the New York Public Library. Lasers write in the volume of the cube not just the surface)
Engineering truism, you can plan for 10 years out, but only design for 5.