Intel has announced the release of two missions (seven in total) which have been made available as a free download for the PC version of Far Cry 2. The missions are exclusive to Intel Game On and you won't find them anywhere else.
According to Intel the missions total three hours of gameplay and "bristle with extraordinarily coolness".
Mission 1: the Morrocan
This mission sends you into the most heavily guarded region of the Leboa-Sako territory. Hiding out at the old Legion fort is a Moroccan who might be able to help you locate the Jackal. Your objective is to locate him and find out what he knows.
Mission 2: the American
Your predecessor has tracked down the American informant to the Dogon village in the rocky northern ranges. Your objective: follow his trail and find out what the informant told him.
The first two missions can be obtained by heading over to Intel Game On where you'll find a free download. Completing Mission 1 will unlock Mission 2.