Judging by the shots Rico it does look like form is following function on the RS3 (which is the best look IMHO). The front arches definitely seem to have bit of stretch on them to house 19"s and a wider track (or wider wheel). I can't quite tell on the rear arches.
I quite like the new front end (same as the TT). The twin ovals is an RS trade mark, i'd be very surprised if they fail to appear on this.
That original RS2 is one of the best RS cars there is, honed by Porsche and follows the less is more route perfectly... all very subtle but works perfectly