Dell just demonstrated its upcoming 10-inch Inspiron Duo convertible netbook/tablet. Based on the dual core Atom N550 the Inspiron Duo runs Windows 7 Premium. The system can work as a tablet:

The demo seemed quite slow and touch screen was very unresponsive (typical of Atom running Windows 7 on netbook hardware). When you need a full keyboard however the tablet can open up, screen swivel around (the bezel remains in place) and you get a standard netbook:

I actually played with a prototype of the Inspiron Duo earlier this year and the conversion mechanism felt pretty solid. Dell expects it to be shipping by the end of this year.

Check out our full gallery of the Inspiron Duo here.