When you see a load of fruit on a stand at a show like MusikMESSE you know that you will get an interesting product and Playtronica is definitely interesting.
Playtronica aims to bridge the gap between the entertainment, education and art through interactive musical experiences. It is an open-source toolkit for creating immersive sensory interactions.
More info at Playtronica
Developments for Korg's instrument have been slow but promising.