Content Collection #1 will make the existing Call of Duty: Elite DLC available to all users. It will include four new multiplayer maps and two new Spec Ops mission.
The multiplayer maps consist of Liberation, Piazza, Overwatch and Black Box. Elite premium subscribers saw the release of Liberation and Piazza in January, while Overwatch released in February and Black Box arrived earlier this month.
The Spec Ops missions, Black Ice and Negotiator, will take players snowmobiling to infiltrate a diamond mine and extracting hostages in India.
Modern Warfare 3 Content Collection #1 will be priced at 1200 MS points (£10.20 / $15).
Modern Warfare 3 will see a total of 20 updates over a period of nine months. Updates will arrive first on Xbox 360, with release on PlayStation 3 and PC following after.
Call of Duty: Modern Warfare 3 was released in November and has broken Avatar's record as the fastest-selling piece of entertainment, but failed to topple Adele as the UK's best-selling entertainment property in 2011.
> Call of Duty: Modern Warfare 3 - Digital Spy's review
> Modern Warfare 3 March map pack preview
See the Content Collection #1 trailer for Call of Duty: Modern Warfare 3 below: