Infinity Ward has announced today that Modern Warfare 3 players with premium Elite subscriptions on Xbox 360 will receive two new multiplayer maps, Offshore and Decommission, and the already outed Spec Ops mission Vertigo on July 17th.

These three drops will release on July 17th along with Terminal for Elite members. Terminal will go live for everyone the next day, July 18th, and it will be free to download.

Here are the screens released and the map(s)/mission synopses as listed on the official calendar:

• A graveyard of rotting [or add decommissioned here] ocean liners has not only given birth to a shantytown of locals, but a mid-sized Multiplayer Map populated in chokepoints; providing the perfect setting for shoreline-based combat.

• Trapped on an oil rig in the middle of the ocean, you have nowhere to go but directly at your enemies in this new Multiplayer map boasting helipads, cranes, and countless perches for snipers eager to pick off the competition. Did we mention to look down or else you may fall off?

• The luxurious “Oasis” hotel in Dubai hosts the latest Special Ops mission, in which players must use laser-guided RPG’s to dispatch waves of helicopters. Utilize rooftop advantage to defend from waves of enemies, before parachuting to a ground-level exfil point.

PS3 Elite members, on the other hand, will have access to Face Off maps, Intersection, U-Turn, and Vortex, and Spec Ops mission Arctic Recon on July 19th, according to Mark Rubin. You can read more about the PS3 drops here.