The 2016 DC Universe original animated film “Batman: The Killing Joke” is coming to 4K UHD Blu-ray on September 11th via Warner, according to an early alert to retailers. The tech specs and bonus materials have not yet been detailed. The bonus materials should be pretty much identical to the previous (2016) Blu-ray release. However, stay tuned for any updates regarding this release. The 4K will come in the form of a “combo pack” with a Blu-ray Disc and Digital Copy of the film included. This now available for PRE-ORDER over at Amazon.