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: Gib Fest!

The following changes are for the PC and will be available for the XBOX 360 in a future update.

Competitive Modes
  • Removed Special Infected spawn music in competitive modes.
  • Added a glow outline to the witch, visible only to the infected team.
  • Added cvar director_allow_infected_bots for confogl and other configs.
  • Survivor health glow changes:
    • Adjusted glow color transitions to match movement speed transitions.
    • Use combined regular and temp health when calculating glow color.
    • Glow pulses slightly when the Survivor is on temp health.
  • Realism Versus
    • Cut Special Infected spawn times by half in Realism Versus.

All
  • Fixed limping Survivors moving slightly faster in water.
  • Fixed voice recording intermittently stopping on Mac OS X
  • Client-side plugins
    • Clients must run with insecure to load unsigned plugins.
    • Insecure clients cannot connect to secure servers.
    • Servers can opt to allow insecure clients by running with insecure.
    • Secure clients can connect to both secure and insecure servers.