The DLC includes eight new Rally stages featuring dramatic climbs, descents and hairpins set amongst snowy mountain roads. Players can race through the Alps and conquer the legendary Col de Turini pass in single-player, split-screen and online multiplayer. The game will feature day, night and foggy - a new weather feature - conditions as well.
DiRT 3 has shipped over a million units since its release on May 24.
Check out some sample gameplay in the video below.