According to Suzuka theater of the Warner Mycal Cinemas, upcoming sci-fi superhero anime film, Gekijou-ban Tiger & Bunny -The Beginning-  will open September 22 on its advance ticket sales page.

Suzuka theater page is already inaccessible but Chikushino theater still list the movie on September 22. It was already announced by film distributor Shochiku that the Tiger and Bunny’s first film will premiere on September.

Taken from Chikushino page translated by Google