Sony registered a mysterious trademark called “Sangeki no Sanso” in the Japanese Patent and Trademark Office on July 29th.
You can check the trademarks here.
The literal meaning for Sangeki no Sanso is “Mountain Villa of Tragedy”. Upon reading this, one could think that is the Japanese title for “Until Dawn” (the game was re-unveiled for PlayStation 4 in the last Gamescom). This game fits the description, but it also could be a new product, since Sony registered in Japan just one day before the trademark ‘Until Dawn‘.
You can check the trademark here.