Frictional Games, the developers behind Amnesia, have revealed SOMA. the game has been in development for the last 3 years and is currently set to come out 2015 on PS4 and PC. SOMA is a sci-fi horror game played in the first person perspective where your a normal human trapped in a world. the main theme behind SOMA is consciousness. Frictional games have also teased that they are looking into bringing Amnesia to the PS4, but are not promising anything right now.
Source: EU PlayStation Blog