There is a video here of it in operation.
http://m.autoevolution.com/drifting-...deo-81387.html
Now I am confused as to whether it is actually a sub-routine of launch control or that it's simply that the the ECU allows for more wheel spin at low speeds with all the nannies "disengaged".
In the video though the car is revving before it is launched which has me back to thinking it is part of LC.