PC in 2019: What's Next?

I recent posted about the Sixth Sense projector plus gesture interface. Computerworld writes about this and what other things we might expect to develop in the next ten years. One interesting quote: " ..the PC of 2019 won't look like today's laptops .... I'm not seeing people carrying anything that looks like a book ... It would be like a phone or a ring or a watch. It will probably take multiple form factors ... " says Dan Siewiorek, director of Carnegie Mellon's Human-Computer Interaction Institute. Looking forward to the new experience.