Silent Hills is the game that will make you “shit your pants”, as Hideo Kojima and Guilermo del Toro said, and now there are rumours that the game may be released episodically.
During the Konami showcase event at TGS 2014 Kojima said that he and his team are inspired from how television seasons are scheduled. But no decisions have yet been made. Silent Hills being in early development at this point.
At this point there is no mention about the platforms that the game will be released on!