State of Decay's second expansion will be called Lifeline and bring a new map to the zombie-filled survival game, according to a post on developer Undead Labs' official site.
Undead Labs community manager Sanya Weathers explained that Lifeline doesn't have a release date and that the developers are "just now digging into the internal playtest process" with the Steam version.
"We're not yet ready to discuss features or make promises," Weathers wrote. "All we can tell you is that it will offer you a new way to play your favorite survival game, that we intend to launch on PC and the Xbox 360 at the same time, and that yes, it will broaden your horizons by a few kilometers.
"Fine, I'll say it straight up: There's a new map, okay? "
Breakdown, State of Decay's first downloadable content, launched last November on Steam and Xbox Live. It brought new playable characters, weapons and more.
Last month, Undead Labs announced that it signed a multi-year, multi-title agreement with the game's publisher, Microsoft Studios. You can learn more about Undead's first game in Polygon's State of Decay review.