Rumors says its going to be unveiled at the Auto salon.
Here are the rumored spec and a pic
450 hk @ 8.250 rpm.
440 Nm
Max rpm >8.500...
DSG
RS5 difference from S5:
-different front and rear
-RS5 unique side skirts
-RS5 unique "round" flared archers
-wider front and rear(specially!) track
-active rear spoiler a la R8
-unique fuel cap a la R8