After what seems like an eternity, the launch of the 2010 Audi RS5 is almost upon us. A nearly-finished coupe version of the hot Audi was recently spotted testing its stopping power in the Alps ahead of a possible Frankfurt Motor Show debut.Also differentiating the Audi RS5 from the S5 is its honeycomb grille and single-outlet dual exhaust.(For comparison, the S5’s engine is rated at 350 hp @