Batman: Gotham Knight is a 2008 animated direct-to-DVD anthology film of six animated short films set in-between Batman Begins and The Dark Knight. Directed by Bruce Timm, co-creator and producer of Batman: The Animated Series, the film's six segments are written by Josh Olson, David Goyer, Brian Azzarello, Greg Rucka, Jordan Goldberg, and Alan Burnett. Each segment has its own writing and artistic style, just as numerous artists work in the same DC Universe. Deadshot, Killer Croc, and the Scarecrow have all been confirmed to appear in the film. Also, a trailer for the film features a creature that look like a giant bat, possibly Man-Bat.
The animated Batman DVD will look amazing, judging from the clips you can see in this promo reel. Batman: Gotham Knight will come out when Batman: The Dark Knight hits the big screen.

Sadly, the above video contains a few boring interviews, saying things like "Most of Batman's adventures take place at night." But the animation itself is great. The direct-to-DVD Batman anime is similar to The Animatrix, the DVD which tied in with Matrix sequels.