Amazon has put up the product page for the 4K Ultra HD version of the Justice League Dark, revealing a release date. According to the listing, the latest home release for the DC Universe Movie series will be coming out on the 9th of October in the North American region. If you are interested, you can preorder the 4K release of the animated film with this link from the online retailer.
You can also check out the cover for Justice League Dark 4K Ultra HD with the image located just below this paragraph.
So, if you are a fan of DC, then you might want to check out the upcoming 4K Ultra HD release of Justice League Dark.