It's new to me and seems unnatural - however - the way it works is you hold the throttle wide open, it keeps the revs at 4K, you dump the clutch, then the bike manages the throttle to keep the front wheel down while all you do is sit there? Am I getting that right? Because that seems crazy.
That's it, just like launch control on the new Vette and Mustang.
Oh, and I imagine you just can't sit there. There's probably some interacting with the bike taking place.