According to the site's source, the game's not a mass shooter, but more in line with the multiplayer aspect of recent Call of Duty titles.
The game apparently features the same sort of multiplayer progression as Call of Duty, and will come with a single-player component featuring a character other than Mass Effect 1 and 2's Commander Shepard.
As Kotaku notes, BioWare Montreal, which has aided in Mass Effect 2 development, was seeking multiplayer programmers earlier this year to "take existing single player user experiences and make them multiplayer safe."
BioWare co-founder Greg Zeschuk has also said that there will be more games set in the Mass Effect universe outside of the series' main trilogy.
BioWare offered further teases on the title's identity after releasing the image, publishing cryptic clues related to temperatures and, apparently, steel.
The new game will be aired at the VGAs on December 11. Check Kotaku for the full story.