Left 4 Dead 2 Cold Stream releases July 24th

The official release of the Cold Stream campaign for Left 4 Dead 2 is July 24th, ending its community beta period after a year. Valve have been mining data to make adjustments.

The beta began March 22nd, 2011 after the DLC unveiled earlier in February. Cold Stream is a community-made piece of content from the creator of the 2 Evil Eyes campaign.

It’ll come with a new Steam Achievement; Stream Crosser, which is earned by completing the campaign on any difficulty. It officially releases for free via Steam this July 24th.