BMW has announced that the new BMW X6 M will debut at the New York Auto Show. Appearing alongside the Z4 Roadster and the new 7-Series, the X6 M will try to lure the attention of the American marketplace at a time when automakers need to fiercely compete for every consumer. BMW is keeping things as quiet as they can on the upcoming M crossover. We previously reported that the X6 M will probably come with a 550 horsepower V8 engine with twin-scroll turbos, information that was buried on the X6 M microsite....