I've just seen an article on Engadget about the Playstation Portable (PSP) - IMVHO the device looks pretty darn cool (photo below) - it looks like the PSP will retail for around $200. As for battery life, Sony has gone on record to promise “between four and six hours for game titles and continuous four to five hours for video viewing.”
It's interesting to see how the combination of embedded processor and battery technology are now getting to the point where devices like the PSP and PMC (Portable Media Center [image below]) are providing enough power to last a flight from Seattle to New York.
Pocket PC and Smartphone devices also have the ability to play music, play games, play video, keep your calendar and inbox sync'd, and make phone calls - so what's the right device for me to carry ? - do I carry a Tablet PC for when I'm coding on the go, a Pocket PC/Smartphone for e-mail/calendar sync on the go, SPOT watch for news/stock/weather/IM/calendar, PMC for sync'd TV shows and "all my music/photo's/home videos", and a PSP for games ?
I thought mobility was about carrying less, with all of the above devices, their power supplies, carrying cases etc... I'm totally loaded down - so does it make sense to have just one device that does it all ?