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:

- Mutation: Headshot!
- Fixed a few missing or invalid entries in campaign menus.
- Fixed a long standing bug that could cause occasional memory corruption or crashes on level transitions.

November 18th, 2011 10:23 PM

Read the full article at Steampowered.com