LittleBigPlanet 3 developer Sumo Digital is working on a "large, genre defining, unannounced AAA title" that the studio claims will be an "industry changing game".
Spotted by The Games Cabin, various job listings seeking staff to work on the unannounced game were posted to the developer's website last month, with the game appearing to be built using Unreal Engine 4.
The listing states that Sumo "currently [has] several unannounced but extraordinarily exciting AAA games in production", with the studio's website adding that it has "multiple titles in production across Xbox One [and] PlayStation 4".
Besides LittleBigPlanet 3, Sumo Digital has previously developed the Xbox 360 version of Forza Horizon 2, Xbox Fitness and numerous titles for SEGA, including Sonic & All-Stars Racing: Transformed, Virtua Tennis 2009 and OutRun Online Arcade.
The studio has yet to formally announce its next game.
Source: careers-sumo-digital.icims.com (via thegamescabin.com)