Mortal Kombat 10 was spotted on Amazon.co.uk over the weekend, listed for release in 2015 for Xbox One, PS4, Xbox 360, PS3 and PC.
The product listing has since been removed, but it's expected that Warner and developer NetherRealm will make the game official later today.
Creator Ed Boon has been teasing the game's announcement for the last few weeks.
Mortal Kombat 9 was released in 2011 and was seen as a return to form for the franchise. Since then, NetherRealm turned its attention to Injustice: Gods Among Us, which brought DC super heroes together for a big fight.