State of Decay's second expansion pack, Lifeline, is in the internal testing process at Undead Labs. There's no launch date yet, but it includes a new map and the team is currently putting it through its paces on Steam, Community Director Sanya Weathers says on the Undead blog.

"We're not yet ready to discuss features or make promises," Weathers says. "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?"

Undead launched State of Decay's first expansion, Breakdown, in November. In January, Undead extended its relationship with Microsoft Studios in a "multi-year, multi-title" agreement, and it hired ArenaNet founder and MMO developer Patrick Wyatt.
[Image: Undead Labs]

This article was originally published on Joystiq.