Major Nelson Podcast #381 features an interview with Dead Money senior producer Jason Bergman in which he reveals a handful of new details on the soon-to-be-released DLC for Fallout: New Vegas. NMA gives an overview of important points:
-Takes 4-6 hours to beat
-Each companion has their own perk, can only take 1 at a time
-Veronica has new dialogue options after you beat the DLC and can get 1 of 2 new perks depending on what you say.
-Ghost People apparently need to be decapitated or gibbed to be killed; Shooting them elsewhere stuns them.
-The Nightkin companion is schizophrenic and has two personalities, Dog and God. Both have their own perk.
-The human companion is named Christine, and is described as mute but intelligent.
-The ghoul companion is a lounge singer named Dean. You may have seen him on posters or load screens in the main game.
-New weapons include the Holo-Beam and the Beartrap Fist.