EA and DICE have released four screenshots of the maps along with descriptions.
Each map is a bis as Caspian Border and Operation Firestorm from the main game, and each one has been “carefully created to cater to the new dirt bike” along with the other three vehicles. Here's the release schedule:
PS3 Premium: March 5th, 2013
Xbox 360 & PC Premium: March 12th, 2013
PS3: March 19th, 2013
Xbox 360 & PC: March 26th, 2013
Here are the descriptions of each map:
Operation Riverside: Supports the modes Capture the Flag, Air Superiority, Conquest, Rush, Squad Rush, Team Deathmatch, and Squad Deathmatch. “Caters somewhat towards infantry action rather than all-out vehicle warfare.”
Nebandan Flats: Supports Capture the Flag, Air Superiority, Conquest, Rush, Squad Rush, Team Deathmatch, and Squad Deathmatch. “The relative openness of the desert setting allows for full freedom of movement for the entire range of vehicles at disposal in Battlefield 3 multiplayer.”
Kiasar Railroad: Supports Capture the Flag, Air Superiority, Conquest, Rush, Squad Rush, Team Deathmatch, and Squad Deathmatch. “While this map also has ample opportunity for dirt bike riders to catch big air, the jumps on Kiasar Railroad are typically more carefully molded into the landscape itself, or not as obvious.”
Sabalan Pipeline: Supports the modes Capture the Flag, Air Superiority, Conquest, Rush, Squad Rush, Team Deathmatch, and Squad Deathmatch. “Similar to Operation Riverside, Sabalan Pipeline was built to cater for a mix of vehicle and infantry gameplay but has fewer and narrower roads that are important to control if you want to dominate the opposition.”
