Ubuntu 10.10 has already been released.It has so far certified a list of 27 laptops and 7 netbooks that work with its full-fledged recent 10.But it has certified none yet for its Unity interface with a touch screen.The rumor is that the Dell Latitude 2100 does pretty well with Unity installed.
Lokk the demo below.It looks like its being done on a Dell Latitude XT2 Tablet PC, perhaps another clue as to which vendor will be first to offer it. The XT2 is not one of the laptops that Ubuntu has certified for use with 10.10.