New spyshots have revealed a new Audi, which is currently being developed, the new RS4. While it is not the final design, the RS goodies under the body shell are visible, like the bigger brakes and wider track. The front bumper will be more aggressive with large air intakes and the fenders will be wider just like the RS5.
It’s not clear if the new RS4 will have the same V8 engine found in the RS5, or if there will be a new high reving V6 twin-turbo instead. But in order to be able to battle with both the BMW M3 and the AMG C63 from Mercedes it needs to deliver some 450 horsepower or more.