In an interview with Gamasutra Akira Yamaoka has stated that he is participating in a new project at Konami where he assumes a suspiciously similar role to the one he has played during the production of Silent Hill: Origins and Silent Hill V "as Planning and also producing - and overall supervision". Could there be another Silent Hill game in the works? After all, the anniversary is coming up and he has said that there's something in the works.
He says this title should be announced soon, and its about 60% complete so stay tuned.