The map will be available first on Xbox 360 from Tuesday, July 17 for Call of Duty: Elite subscribers and from Wednesday, July 18 for non-subscribers.
Release dates for PlayStation 3 and PC will be announced in due course.
Terminal was introduced in Modern Warfare 2 based on the single-player campaign 'No Russian' mission.
It will be available as a free download for Modern Warfare 3, and is being considered as a bonus separate from the Call of Duty: Elite content calendar.
Another classic Call of Duty map, Nuketown, was recently revealed as a pre-order bonus for Call of Duty: Black Ops 2.
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Watch a video of Modern Warfare 2's Terminal map below: