Heavy Rain developer Quantic Dream has filed a domain registration called "singularityps4.com", which seems to indicate the title of its next game, and platform.
This is especially convincing in that Quantic Dream had registered previous domains in that manner, including heavyrainps3.com and beyondps3.com.
Some have speculated that Singularity could be based on a cancelled action film produced by Sony Pictures that was being produced by Roland Emmerich and Ray Kurzweil. The film would have examined the effects of nanotechnology.
Stay tuned.