I don't think this concept is new, but for Wacom it is: a multi-touch digitizing tablet, as we call it in the CAD world. Wacom's marketing people prefer the name "Bamboo Pen & Touch" ($99) — a bit odd, since I see no bamboo in the product.
As digitizing tablets go, it is small, but it works with the included stylus as well as multi-touch finger presses and swishes. I dunno if the multi-touch works with SpaceClaim.
Engaget notes that while stylus-use suffers from the absolute positioning native to tablets (rather than the relative positioning with which mouse users are familiar), you can switch it to mouse mode.
