The Audi A7 might still be a new model, but facing competition from the more powerful Mercedes CLS-Class, Audi needs something for when the A7's sublimely good looks aren't enough. Enter the S7, spied here without camo. VW platform-sharing being what it is, we'd expect power to come from the 4.0-liter turbo V8 originally developed for the Bentley Continental GT. This would put power at CLS550-beating 429 horsepower. Hopefully we'll be seeing it in Frankfurt. Photos courtesy of Teamspeed.