There’s been a big stink about the British-made Eigenharp controller, with mention from Engadget, Synthtopia, the BBC, and bloggers like CDM and Matrix. It requires a Mac, however. Hope they sell some and are encouraged to port the software to Windows. Given its complexity, ~$7000 isn’t a terribly high price.
(Just remember that people nowadays routinely pay $50,000 or more for a grand piano.)
Almost forgotten in all this hype was a different controller, the Madrona Soundplane. Looks as though it’s not finished yet.