A live-action "Justice League Dark" film has been in development at Warner Bros. for a while now, but the latest report takes the property in a different direction. The British Board of Film Classification website lists "a sneak peek at 'Justice League Dark'" as one of the bonus features on "Batman: The Killing Joke," which suggests that "Justice League Dark" may also get an animated feature.

Categorized as "bonus promotional material," the aforementioned "sneak peek" runs at a brisk 7 minutes and 50 seconds. CBR has reached out to Warner Bros. for comment.

RELATED: "The Killing Joke" Official Description Promises a 'Punch Line That Will Leave You Speechless'

Word first surfaced in November 2012 of a possible live-action, Guillermo del Toro-directed "Justice League Dark" film, based on the comic book series of the time starring John Constantine, Zatanna, Deadman and more. Updates came periodically from del Toro at various events -- including a working title of "Dark Universe" -- though based on reports, the film never seemed to move past preliminary stages. It is unlikely that del Toro would be involved in this possible animated version of the film.

Though Del Toro has since moved on, he left a script with WB and a live-action version of "Justice League Dark" is also set to explore the supernatural corners of the DCU under the watch of producer Scott Rudin.

(via ComicBook.com)