L4D 21st April Update, Changelog Options

[MonkeyFiend]

Survival Mode

• New gameplay Mode
• 16 maps including Last Stand
• Leaderboards
• 7 new achievements

Versus Changes

• Fixed a case where versus team score would continue to be recalculated after the score panel was displayed
• Fixed an issue with recalculating the versus score health bonus for a player when they are rescued from being incapacitated
• Fixed being able to start a swing as an infected, then teleport to the survivors and have the claw swing hit a survivor
• Fixed a case where teleporting to the survivors would not reset the ability timer
• Fixed an exploit where you could load the chamber of a weapon with bullets by holding down the melee key
• Fixed a case where it was not possible to join a game while it was in a finale
• Fixed a rare case where listen servers would speed up the game over time
• Removed convars related to melee fatigue
• Fixed a case where infected players would get a respawn time on their initial spawn into a map

Server Changes

• Made ms_force_dedicated_server not require cheats
• Add a message when queuing a heartbeat
• Simplified setting of game mode
• Removed convars director_no_human_zombies and director_holdout_mode
• Added mp_gamemode [coop,versus,survival]

General

• Added lobby join and leave messages

Left 4 Dead

• Fixed an incorrect DLL for windows dedicated servers
• Corrected players not receiving the Lighthouse achievement
• Added missing Survival only sounds
• Fixed issue with awarding medal achievements
• Corrected ghost icons appearing survival scoreboard

[Magik6]

No idea, haven't been trying to get into a game on the new maps, just had a quick blast on survivor mode