The PS3 Trophies for Resident Evil 5 may have listed the full multiplayer modes included with the game.
Advertisement:
The Trophies - which will almost certainly be the same as the achievements on the 360 version - make reference to modes that haven't yet been mentioned by Capcom.
These are Slayer, Team Slayer, Survivors, Team Survivors and Versus.
We're not really sure what these modes entail right now but more importantly, we can't see how Resident Evil 5's controls lend themselves to a multiplayer environment. At least it didn't go as far as Team Capture The Flag...