When Mass Effect Trilogy was announced, many gamers wondered whether the three-game bundle would include the respective downloadable content from each title. BioWare answered this and other questions with a new FAQ on their website.
The short answer is yes, the bundle includes DLC. The long answer is, um, long. The PC version will come with the Bring Down the Sky and Pinnacle Station DLC for ME1 on the disc. That version will also have access to the Cerberus Network DLC from ME2, which includes Zaeed – The Price of Revenge, The Firewalker Pack, Cerberus Assault Gear, Arc Projector heavy weapon, and Normandy Crash site. PC gamers will also get the Online Pass for ME3 so they can play online co-op.
Speaking of co-op: the Trilogy is compatible with the standalone versions of Mass Effect games. You'll be able to play online with other ME3 owners. Furthermore, save files from the standalone versions will work with the bundle and vice versa.
Xbox 360 gamers will get everything that PC gamers get except for the two ME1 DLC packs. BioWare says that they're "available as stand-alone downloads through Xbox LIVE." It's not clear whether you'll have to pay for them, though.
BioWare didn't say anything about the DLC situation for the PS3. They have more time to announce that information because the PS3 edition apparently isn't coming out on November 6th like the PC/360 iterations. BioWare simply says that the bundle will hit the PS3 "later."
The trilogy bundle is a source of excitement for PS3 owners because it includes the original Mass Effect. This will be the first time the game is available on that platform. BioWare says that they'll release ME1 as a separate download through PSN for $14.99 on the day that the bundle is released.