Updates to Left 4 Dead 2 have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:
Encore mutation: Taannkk!
Dead Center - The Mall
Survivors can no longer bypass the storefront mini-finale.
Dark Carnival - The Barns
Survivors can no longer bypass the barn interiors.
The Parish - The Waterfront
Removed the Survivor zombie-jump exploit in the first alley.
The Parish - The Quarter
Survivors prevented from using short cut over the top of the fence.
Various bug and exploit fixes for the first 3 maps.
Added survivor respawn closets – some temporary while we work on the maps.
Added navigational aids to maps.
Changed the first map’s ending as an experiment – please give feedback!
Added alternate route around boat mast – please give feedback.
To help with public testing, we fixed more bugs and exploits than we normally would on maps that are still in a transitional state. We are holding off on many changes to the finale right now as that map will change the most.