Well, according to AnimeNewsNetwork there is a new Vampire Hunter D series currently in development. You can find the entire article here but basically there is going to be work in creating a CGI HD Series of the books.
From the Article:
California-based production studio Unified Pictures told ANN that it is unveiling plans for a new CG-animated series based on #0066cc">Hideyuki Kikuchi's long-running #0066cc">Vampire Hunter D novel series at Anime Expo. The company is co-producing the series with Japanese CGI animation studio #0066cc">Digital Frontier (#0066cc">Resident Evil: Degeneration, #0066cc">Tekken: Blood Vengeance, Mighty No. 9).