Valve has announced the first DLC pack for Left 4 Dead 2 and it will be hitting Steam and Xbox LIVE early next spring.

Left 4 Dead 2 has silenced many critics when it was released in the middle of November. Many people raised some concern when Valve announced a quick (quicker than their usual schedule anyway) follow-up to their best selling zombie game L4D1, but there hasn't been much criticism once people actually got their hands on it.

Now Valve has announced the first DLC pack for L4D2 and it is called "The Passing". It will take place after the Dead Center campaign and will involve the L4D2 cast meeting up with the L4D1 characters. In addition to the new co-op campaign, the DLC will include new arenas for the Survival, Scavenge, and Versus modes. We will also get our hands on a new melee weapon and a new firearm. A new "uncommon common" zombie class will also be added to the game.

"The Passing" will hopefully be available in early spring for Xbox 360 and the PC. Left 4 Dead 2 is available now for both platforms.