September 17's downloadable pack is dubbed "Insane Night," Sony Europe's Mike Kebby noted on the PlayStation.Blog. A second add-on, "Prey In The Darkness," will apparently follow on September 24. It is not yet known if the second pack will be a free multi-platform download, but the first one has already been confirmed as such.

Eidos is still being rather coy about the actual contents of the DLC, though the structure of the game and names of the packs certainly indicate they could be challenge maps.