Sony told IGN that the Siren listing was in reference to PS4 adventure game Rimerather than SCE Japan's cult horror series.
"The listing for Siren was a mistake, it should have listed Rime," a Sony representative explained. "Siren was the working title name for Rime prior to its announcement at Gamescom 2013."
The first Siren game (known in Europe as Forbidden Siren) was released for PS2 in 2003. The title has spawned two sequels; 2006 PS2 game Forbidden Siren 2 and 2008 PS3 title Siren: Blood Curse.