It's clear that Cadillac was VERY serious when they said they want to build a BMW M3 killer, serious enough that they are testing the new Cadillac ATS-V performance sedan alongside a BMW M3 sedan.
Not much information was given with these pictures, so for now, all we have to see are pictures. Hopefully sometime this year we'll get a very first look at the production model ATS-V at an AutoShow.