The gist of the discussion here is that " S " label ( 997 C2S and now C4S ) has returned to it's roots as a label for a higher performance model - not a " wide body " as it had become starting with the 993 series.
So in the future, there will be a " turbo-look " body option with probably the 997 Turbo's suspension / tires / brakes too.
I suspect it will be only avail with the higher output 3.8l C2S and C4S models due to the weight and aero penalties of the option.