According to the DiRT 3 Trophies discovered by PS3Trophies.org, the upcoming rally racer has several downloadable content packs planned.All in all, Trophies have revealed four different DLC packs, including the "Mud and Guts" and "Power and Glory" car packs as well as the Monte Carlo and X Games Asia track packs, each with four additional trophies. Release date and pricing for the packs has yet to be revealed.
PS3 Trophies tend to mirror Xbox Achievements for the same titles, making the DLC a likely bet for the Xbox 360 version as well.