A possible roster leak for Mortal Kombat 11 surfaced on SteamDB, rumored to have revealed 11 character additions for the game, including three brand new fighters that are unknown.
The leak appeared in an achievements list on SteamDB, which is a third-party database that takes the exact information from Steam’s internal data to show it publicly.
Due to that process, an achievements list would theoretically have to be added to the PC version of a game by the actual developers for it to appear on SteamDB.
The list includes trophies that players can get for performing two different fatalities for specific fighters.
Source: IGN.com Mortal Kombat 11 Director Responds to Alleged Roster Leak