Microsoft is preparing another addition to its Kinect Fun Labs offering, judging by a German ratings board listing.
The post, spotted by Siliconera, is for something called Kinect Fun Labs: Air Band. There's nothing more to go on, other than that its genre is down as "arcade/music".
The apps/games/thingummybobbins currently offered by Fun Labs, trailered below, include Googly Eyes, Kinect Me, Kinect Finger Tracking and Kinect Sparkler.
We'll update when Microsoft releases some more details.