As some of you might know, AnimeJapan 2017 was happening in Tokyo from the 23rd to the 26th. At the No Game No Life Zero event held there, the films first promotional video was released.
According to AnimeNewsNetwork, the film teases “a story from myths erased from peoples memories.” It will consist of mostly the same cast, but they will be playing characters who lived six millennia before Sora and Shiro came into the world. The movie will open on July 15, 2017.