Well, Microsoft has just launched a vague campaign on a new something called Origami.

http://www.origamiproject.com/

But it seems they could not keep the secret until launch. A demo movie has already been spotted on a site of a marketing firm.

http://www.d-kitchen.com/ (enter site> work> brand theatre> Microsoft Origami)

Looks like a cool device that seems to bring the tablet PC to the next level. It is an iPod, PSP, communication system, internet browser, navigation system, portable HD in one it seems. Well the next portable assistent war has begun. (seeing the rumors on the Apple tablet mac/iPod)