The recently-concluded Jump Festa’19 event had one huge bombshell for Prince of Tennis fans. During a stage presentation, they announced that Takeshi Konomi’s manga is inspiring a new anime film. Its title is Ryouma! Shinsei Gekijōban Tennis no Ouji-sama (Ryouma! Rebirth Movie The Prince of Tennis). They even unveiled a brand new teaser visual:
Takeshi Konomi himself drew the teaser visual, which has a samurai inspiration. The staff also announced that it will premiere in Japan sometime in early spring 2020.
As the stage announcement reveals, its story will happen between the events of The Prince of Tennis and The New Prince of Tennis. This will be a completely original story which Konomi never made for either of his manga titles.
source: Comic Natalie