Rockstar has released a heap of information and screenshots of both deathmatch and freemode multiplayer modes in Grand Theft Auto: The Ballad of Gay Tony.

Deathmatch:

New weapons: Pistol .44, Explosive Shotgun, Assault SMG, Gold SMG, Advanced MG, Advanced Sniper, Sticky Bombs and Parachute
Weapon Classes: Episodic, Automatic, Sniper Rifles, Explosives, Sticky Bombs.
Cash for Kills: Make $25 for every assist.
Locations: CC Plaza, Meadow Hills, Firefly Island, Alderney Building Site, Varsity Heights, Factory, Construction, Acter Power Station, Pier 45, Castle Gardens Park, Boat House, Easton Subway, Warehouse, Hospital, Waste, Trespass, Museum and more.

Freemode:

EDIT: Rockstar has sent us unwatermarked, un-compressed versions of the screenshots. You can view them here.