Multiplayer modes anounced, 15 of them
Playable up to 16 players though I'm not sure if that goes for all of them.
Not all have been explained yet...
If anyone has more info feel free to fill in the gaps
1. Hangmans NOOSE
-a coop mission where you have to transport a criminal while being chased by SWAT
2. Car Jack City
3. Bomb da Base
4. Bomb da Base II
5. Mafia Work
-you play as Kenny Petrovic's hitman, the aim is to take out the target before your adversary does
6. Team Mafia Work
-same as Mafia Work but in teams
7. Deathmatch
-plain deathmatch, the host can set wether or not there will be police, the amount of traffic and pedestrians and the types of weapons
8. Team Deathmatch
-same as Deathmatch but in teams
9. Turf War
10. Cops N Crooks
-the crook team has to escape while the cop team has to prevent it
11. Race
-plain race, weapons alowed
12. GTA Race
-same as Race only you can also steal your adversary's car
13. Deal Breaker
14. Free Roam
15. (unknown)