A portion of sales from the DLC promotion will be donated to the Call of Duty Endowment.
Lewys Martin, a 20 year-old man from Deal, Kent, has been jailed for 18 months after admitting to making thousands of pounds by selling credit card details obtained via a virus distributed with a Call of Duty hack.
Leaked images imply a near-future setting.
There's some morse code on the Call of Duty teaser site that says, when magically transmogrified into English, Black Ops 2.
An online advertisement for Call of Duty: Black Ops 2 has hit the net ahead of Activision's official announcement on May 1.
Activision has launched a countdown to the world premiere of its next Call of Duty game, expected to be Black Ops 2 from Treyarch.
Is Activision gearing up for a Call of Duty: Black Ops 2 reveal in the next two weeks?
Sales of the most recent CoD are 4.2 per cent behind where Black Ops was in the same period.
This year's Call of Duty game - could it be Call of Duty: Black Ops 2? - will see "meaningful innovation" for the well-worn FPS juggernaut, Activision has said.
Call of Duty Modern Warfare 3 failed to match up to the UK sales record set by 2010's Call of Duty: Black Ops, according to data released by ERA.
FPS titles dominate Microsoft's listings for the most-played games on Xbox LIVE for 2011, with Call of Duty titles occupying the top three slots.