http://arstechnica.com/gaming/news/2009/02/left-4-dead-dlc-coming-to-360-pc-free.ars
dont have the game, but for those you who have it, this is good news.
According to Steam News, the developers got right to the point with the news: "The recently announced Left 4 Dead Downloadable Content (L4D DLC) will be delivered to Xbox 360 and PC gamers free of charge." It certainly doesn't get more up front than that.
The Survival Pack is set to feature a new multiplayer game mode, "Survival," as well as two complete campaigns for Versus Mode, "Death Toll" and "Dead Air". Exactly what these modes will entail or when this content is due to be released has yet to be announced by Valve. Since the content will be added to new retail copies of the game, it only seems reasonable that Valve would make this available for free to previous customers.
