This year's 33rd issue of Shueisha's Weekly Shonen Jump magazine revealed on Saturday that the upcoming Dragon Ball film will be set between the 517th and 518th installments of Akira Toriyama's original manga. Specifically, it is set during the "lost decade" of story time after the end of the battle with Majin Buu. Kuririn, Piccolo, Vegeta, and other familar characters will appear in the film. The film is not a spinoff, but a story in the official history of Dragon ball.

Akira Toriyama has been deeply involved in the film's production from the early screenwriting stages. Masahiro Hosoda (Dragon Ball Z episode director, Nangoku Shounen Papuwa-kun) is directing at Toei off a script by Yūsuke Watanabe (live-action 20th Century Boys trilogy, Gantz, Bloody Monday, Future Diary).

Source: Comic Natalie