BioWare appears to be planning a major piece of future DLC for Mass Effect 3.

The new expansion is being developed by the studio that developed the Mass Effect Trilogy at BioWare Edmonton, rather than BioWare Montreal who worked on the recent ‘Omega’ DLC.

An eight-person writing team is working on the DLC – an unusually high number for additional content – and the team includes “core members of the Mass Effect 3 staff such as lead writer Mac Walters.”

BioWare designer Jos Hendriks wrote on the company’s official forum: “It’s all hands on deck for this one. Pretty much every Mass Effect 3 DLC writer here in Edmonton is involved. If my math skills are correct [that means] eight.”

According to suggestions, the DLC looks set to be singleplayer and may involve the Citadel.  A number of characters look set to return, including Joker and Kaiden Alenko.

Mass Effect trilogy composer Sam Hulick also appears to be part of the team and tweeted: “What I’m up to lately: working on an unannounced Mass Effect 3 DLC.”

“Tossing in piano and muted strings for this one particular piece,” he added. “High potential for tears.”

The DLC looks like it might well be the epic ending that so many wanted from Mass Effect 3, or just another good few hours with the world’s favourite space opera.

Via Eurogamer:

Other Mass Effect 3 composers Sascha Dikiciyan and Cris Velasco are also contributing to the score, Dikiciyan told Eurogamer. The amount of music contributed will be “more” than the usual DLC.

Another noteworthy return is actor Seth Green, who has provided the voice of Normandy pilot Joker since the series’ inception.

“@SethGreen Thank you for yet another fantastic session. And thank you for being such a kind person,” BioWare producer and voice director Caroline Livingstone wrote on Twitter last week, exposing the actor’s involvement. “You are lovely!”

It marks the first time Green has been enticed back for Mass Effect 3 DLC work.

And it appears other voice actors have been recording, too. Raphael Sbarge, voice of squadmate Kaidan Alenko, tweeted that he was back in the recording studio at the end of October. No squadmates appeared in Omega, which indicates his lines were also for the upcoming DLC.

Files hacked from previous DLC packs suggested that the next single-player add-on was to focus on the Citadel (the method was previously used to identify Leviathan and Omega details).