http://ps3.ign.com/articles/859/859647p1.html

Awsome to the MAX!!!!

Possibly fifteen game modes!!!

Free mode is all I'll play, no interest in races or whatever.

Here's some more elaborate info on the multiplayer modes for GTA IV

" The latest issue of PlayStation Revista Oficial, the Spanish Official PlayStation Magazine, has the first details on the online multiplayer mode of Grand Theft Auto IV. The publication has revealed that there will be 15 multiplayer game types in GTA IV, ranging from co-op to deathmatch. I just translated some of the facts mentioned in the article:

1. Death Match will feature rocket launchers.
2. The host of the match set the rules for each game type. In “Race” and “GTA Race,” the host chooses the vehicles and number of laps. In “Deathmatch” and “Team Death Match,” the host chooses the weapons, the number of pedestrians, the amount of traffic, even if the police will sneak in or not.
3. You can customize your character in multiplayer, from sex and race to hair and clothes.
4. PlayStation Revista Oficial played a death match game where all players had rocket launchers and half the city was blown away.
5. In “Mafiya Work” and “Team Mafiya Work,” each player becomes a Kenny Petrovic's assassin that competes against each other to complete Petrovic's orders (issued via a mobile phone) before the others.
6. In “Race” and “GTA Race,” you can use fire weapons to neutralize your rivals and steal a car in case yours gets busted.
7. In “Cops N Crooks,” you’ll be able to play cops and robbers, but in a wild way. One team plays as criminals on the run while the other team plays as the cops, whose mission is to kill the head of the criminal band. To make things even more interesting, cops can see the location of the criminals on their GPS, so criminals never know where or when police will sneak in. Of all the game types played by PlayStation Revista Oficial, “Cops N Crooks” was the most entertaining one.
8. In “Hangman’s NOOSE,” you’ll play co-op and this game type is similar to the VIP escort game mode in Counter-Strike."

I'm most excited for Cops N Crooks. With the new aiming and cover system + a huge map. It sounds EPIC. Cops N Crooks is gonna be what the game "25 to Life" shoulda been.

Cops 'n Crooks and (Team) Mafia Work both sound very, very cool.

I'll do team deathmatch n freeroam.

Anybody know if GTA4 will have co-op that can be played on one console through split-screen ???

I like them all expecially cops n crooks

I will wait for official detials before going wild
However, the date to look forward to is 27th March, when a new trailer will be released, hopefully showing some game play

I didn't even know that it was going to have multiplayer. I've been wanting that since GTA3 came out. Even though I was hoping for a more MMO-like persistant world with a lot of people rather than just 16. But this will be good enough for now. Now I can't wait to get it in October/November (when the PC version will likely come out).