From Warner Bros. Animation, producer Bruce Timm and featuring stars Kevin Conroy as The Dark Knight as well as Mark Hamill reprising his famous role as The Joker comes Batman: The Killing Joke. The animated feature is slated to hit DVD/Blu-ray and digital in late 2016.
Batman: The Killing Joke is a 1988 one-shot graphic novel featuring the characters Batman and the Joker written by Alan Moore, illustrated by Brian Bolland, and published by DC Comics.
Source: Yahoo!