Frictional Games announces Amnesia: A Machine for Pigs will be released on September 10th for Windows, OS X, and Linux, offering another survival/horror experience using the same setting as Amnesia: The Dark Descent. Here's word:

From the creators of Amnesia: The Dark Descent and Dear Esther comes a new first-person horror game that will drag you to the depths of greed, power and madness. It will bury its snout into your ribs and it will eat your heart. Amnesia: A Machine for Pigs is survival–horror at its most unsettling; helpless and alone, no weapons to soothe your nerves, and the dim light of your lantern to offer any comfort.

For Windows, Mac, and Linux, Amnesia: A Machine for Pigs is available for $15.99 ($19.99 regularly) at these digital distributors:
Steam
GOG
Humble Store
Gamefly
GamersGate
Desura
Mac Game Store

Amnesia: A Machine for Pigs' narrative-driven horror, free of combat and complex puzzles, instead encourages players to entrench themselves in the world, be consumed by its ambiance, and run for their lives. More info:
http://aamfp.com/