Batman: Gotham Knight
English name: Batman: Gotham Knight
Genres: Action, Adventure
Type: OVA, Episodes: 6
Aired: Jul 8, 2008
Studio: Bee Train, Production I.G, Madhouse, Studio 4°C
Source: Other
Rating: R - 17+ (violence & profanity)
Synopsis:
Anime-inspired direct-to-DVD anthology film. Comprised of six short stories, from diverse creators, including Academy Award-nominated Josh Olsen (A History of Violence), Batman Begins writer David S. Goyer, and comics scribe Brian Azzarello. It's planned for a release window of two to four weeks prior to the release of The Dark Knight, and would bridge the gap between Batman Begins and The Dark Knight.

(Source: IMDB)