State of Decay Lifeline DLC will be released for Xbox 360 May 30 at $6.99 (update)

Undead Labs has announced the release date for Lifeline, the latest set of downloadable content for survival simulation State of Decay. On May 30 players will be able to download the module for $6.99 on Xbox 360.

The DLC will follow a platoon of male and female soldiers, a unit called Greyhound One. Players will have to keep them alive while attempting to maintain order in the overrun city. The expansion offers players a new story, new weapons and game features, as well as an entirely new map. The city of Danforth covers some four square kilometers.

Polygon's Samit Sarkar saw a demo of the expansion and interviewed Undead Labs founder Jeff Strain, who said his studio's partnership with Microsoft has been key to the rapid development and continued expansion of the game.

"My experience with our team and Microsoft," Strain told Polygon, "has been that it is built from very passionate, very smart people whose hearts are in the right place."

Today's announcement proves out the success of that relationship by releasing the DLC a month earlier than originally anticipated.

"If all goes well," Undead labs wrote on its blog, "this may be the first time in gaming history that a game was released BEFORE the official public target. It’s a long story, best told over copious quantities of frosty beverages, but the short version is that both the Undead Labs team and the crew at Microsoft has been burning the midnight oil to make this happen before State of Decay celebrates its first birthday."

Polygon has reached out to the developer to confirm when the DLC will be available for the PC version [and will update this article when we receive more information].

Members of the development team will play the DLC live Tuesday, May 27 at the Official Microsoft Studios Twitch channel at 2 p.m. EDT. They will answer questions and give away download codes. Read the original Polygon review here.

Update: Undead Labs has confirmed to Polygon that both the Xbox 360 and the PC version of the Lifeline DLC will go live on May 30.