From what i remember, Konami has stated that the reason for the title cancellation, it was that the game wasn't enough action. Also IGA on a old interview, i don't remember where it was, has said that the games code exists somewhere inside Konami and when he was asked from the reporter if he was going to include the levels from resurrection as a bonus at a new Castlevania game, IGA laugh and said that if he has the time, maybe it will do it on a future Castlevania game. That interview was around the time that CoD was in the making!!