In their latest Steam News update, Valve confirmed that their upcoming Left 4 Dead Survival Pack will be offered for free:

The recently announced Left 4 Dead Downloadable Content (L4D DLC) will be delivered to Xbox 360 and PC gamers free of charge.

Due for release this spring, the DLC for 2008's best-selling new game property on the PC and Xbox 360, is dubbed the L4D Survival Pack and introduces a new multiplayer game mode entitled, Survival, plus two complete campaigns for Versus Mode (Death Toll, Dead Air).

Left 4 Dead Update Released
December 4, 2008,


Updates to Left 4 Dead have been released. The updates will be applied automatically when your Steam client is restarted. The specific changes include:

Left 4 Dead

* Finding a dedicated server when starting the game from a lobby is now faster and more reliable
* Versus mode is now locked to Normal difficulty
* Difficulty on a server is now locked to the one set by the lobby reservation
* Fixed lagouts/spikes after level transition
* Fixed directory issue with spray logs in some cases
* Fixed video settings not saving after closing video options dialog
* Corrected a boomer suicide exploit
* Several minor localization fixes
* Fixed disabling cheats incorrectly resetting data