Along with a video, Naughty Dog announced the Uncharted 3: Drake's Deception 1.11 patch will be launched at the end of this May. The Lab returns with a T-bolt/Pistole only map added to the playlist - other game types will be rolled out as the year progresses. The Lab will contain treasure drops from whatever the base game type is (the T-bolt/Pistole map is considered Team Deathmatch).
In addition, Elimination Mode will be added and will contain treasure drops from Team Deathmatch. And if you leave a game, disconnect, or turn off your PS3 mid-game, it will be counted as a loss.