The Left 4 Dead Blog announces the new weekly Mutation for the co-op zombie shooter is "Room for One." This is for campaign finales to eventually remove the cooperation from gameplay, as there's only room for one in the rescue vehicle. they also have a new poll and last week's poll results. This update from Steam News has the Left 4 Dead 2 patch notes, which are also reproduced below.

Left 4 Dead 2

• New mutation: Room For One.
• Improved SurvivorBot’s ability to support players who stop moving to fight infected.
• Improved SurvivorBot’s ability to support players in tight spaces.

Match Making Changes

• Server searches for Official Dedicated servers no longer automatically fall back to Best Available. Lobby leaders will be given the option.
• Lobby leaders can select "Steam Group Server" as a server option. This will allow them to select individual servers.