Far Cry 2 producer Louis-Pierre Pharand has confirmed there will be four multiplayer modes in Far Cry 2.
In a Eurogamer interview, he said the obligatory Deathmatch and Team Deathmatch modes will be present and correct, along with Capture the Diamond (if you've ever played Capture the Flag, you can probably work it out).
Plus there's Uprising, described by Pharand as "a modified version of a VIP".