We are not sure of the release date for Thor: Ragnarok. It was released at the box office on 2017-10-25 so we estimate it was released to DVD in January 2018.
Director: Taika Waititi
Cast: Tom Hiddleston, Idris Elba, Chris Hemsworth, Cate Blanchett, and Jeff Goldblum
Thor is imprisoned on the other side of the universe and finds himself in a race against time to get back to Asgard to stop Ragnarok, the destruction of his homeworld and the end of Asgardian civilization, at the hands of an all-powerful new threat, the ruthless Hela.