The Silent Hill HD Collection which was originally a PS3 exclusive has now been confirmed for the Xbox 360 too. This is apparently due to fan response to the exclusivity announcement.
Silent Hill: Downpour producer Tomm Hulett said at the Konami press conference at Gamescom that they were “aiming” to release Silent Hill HD Collection simultaneously on both consoles. So that might not be quite how it happens then, but at least Xbox fans can enjoy the games too now.