...which has a locking type feature. Basically as far as I understand it, the Type C Torsen allows for a static torque split to be set, where as our Torsen's (Type A I believe) you cannot specify a torque split, it will go where it deems necessary within a range determined by the Torque Bias Ratio.

Pretty bad ass if that's the case. It'll mean that Audi can set a static no-traction torque split of like 30/70 F/R, though they may wuss out like always and do a 60/40 split static.

But I like where they're going with it. According the B7 RS4 release, this is the first they've used the new Torsen in, so I think the RS6 unit is what you'd find in the 4.2 A6.