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So much for it being a fad. Kinect has evolved from a way to play with Elmo to a key tool in scientific research, delivering interactive presentations and managing your bank account. We've always called these non-standard uses of the device "Kinect Hacks" as people find more weird and wonderful ways to use it to their advantage. Unsurprisingly, Redmond has been paying attention and it's planning a commercial Kinect SDK. It's teaming up with developers to create the new software and has already received 200 applications from interested parties.
Engadget, Kinect commercial SDK coming in 2012 (video)