The case has arrived. It dosn't look a whole lot different on the outside, the only noteworthy change is a large grouping of cooling fins cast into the front side and bottom of the case.

Front diff... no differential disconnect.
Inside things are quite different. The center Torsen Differential is a T3 3rd generation piece. It is rear drive axle biased and can supply up to 70% of the torque to rear wheels... that means less understeer.
Center Torsen differential, Torsen is now owned by Toyota.