DLC for Amnesia?

[Mothhive]

As scarecrow hinted at with his screenshot, it looks like it was implemented for the files that were downloaded when you login to the Aperture Science page from inside the game. The only other game I had with this DLC tab, but no reason for it, was Super Meat Boy, which is also part of the ARG and also has downloaded files after logging in to the Aperture Science page from inside the game.