We've known for some time that Cadillac is currently hard at work developing its ATS V-Series, but only today are we seeing for the first time images of the coupe variant. In fact, the regular ATS Coupe hasn't even launched yet. Set to go head-to-head with the also upcoming BMW M4, the ATS-V Coupe has just been spotted testing for the first time wearing some heavy camouflage. The 2015 ATS-V Coupe will sport a more aggressive front end, with a much lower grille intake and chin spoiler.

Some of the camo also reveals the outline of some larger air intakes/fog lights on either corner of the front bumper. It also looks like GM has given this test mule a pair of fake Buick-like vertical bars to further help disguise it. But look closely enough and you'll notice that the fenders are wider and the ride height is a bit lower. The hood camo also appears to hide a "power dome." Out back you'll also see a pair of double barrel exhaust outlets and a trunk lid spoiler. Power will likely come from a twin-turbo 3.6-liter V6 that'll spit out some 410 horsepower. Look for the ATS-V Sedan to debut at Detroit this January, with the coupe coming next year.