Activision will soon be wrapping up the DLC for Call of Duty: Modern Warfare 3, with the publisher today revealing details on the final two collections of content, which also add the new Chaos Mode to Spec Ops multiplayer. The 'Decommission' and 'Offshore' maps and 'Vertigo' Spec Ops mission from Collection #4 will be heading to Elite subs on PS3 on August 16th before the Content Collections drop for non-Elite folks.

Modern Warfare 3 Collection #3: Chaos will be coming to all non-Elite members on PS3 presumably sometime in September since the Xbox 360 release is scheduled for August 9th. It adds the aforementioned Chaos Mode, which tasks you with surviving against increasingly taxing waves of enemies while scoring multipliers by chaining together kills and collecting power-ups. You'll be able to play Chaos Mode on fan-favourite multiplayer maps 'Resistance', 'Village', 'Underground' and 'Dome'.

The so-called 'Chaos Pack' will also include three new Face Off maps - 'Vortex', 'U-Turn' and 'Intersection' - and four new Spec Ops missions, namely 'Vertigo', 'Arctic Recon', 'Light 'Em Up' and 'Special Delivery'.

MW3 Collection #4: Final Assault will then be the final DLC pack for Modern Warfare 3 arriving on September 6th for Xbox 360, which means it'll likely suface on PS3 in October. It'll feature five new multiplayer maps, including an abandoned mining town called 'Gulch', a network of "deadly" oilrigs called 'Offshore', a rusting labyrinth of ocean liners called 'Decommission' (pictured), a war-torn New Orleans entitled 'Parish' and a beach setting on the Jersey shoreline sets the scene for the 'Boardwalk' map.

Both MW3 Collections #3 and #4 will cost $15 apiece, with each of the maps, Spec Ops missions and new Chaos Mode to be made available to Elite subscribers separately prior to the release of each Content Collection, as per the Decommission and Offshore maps and Spec Ops Vertigo mission coming to PS3 in two weeks' time.