An extended cut of Warner Bros.’ tentpole “Suicide Squad” will be available next month with scenes that did not make the theatrical release.

Jared Leto had complained shortly after the film’s Aug. 5 release that many scenes he shot as the Joker were deleted.

Warner Bros. unveiled a short teaser Wednesday touting the extended cut for the film’s home entertainment release, available on Digital HD Nov. 15 and Blu-ray Dec. 13.

The supervillain mashup was drubbed by critics but became a solid box office performer with $740 million in worldwide grosses as part of the studio’s massive efforts to exploit its DC Entertainment library. The budget was estimated at $175 million

David Ayer directed “Suicide Squad” from his own script about a secret government agency that recruits imprisoned supervillains to save the world in exchange for clemency. The film stars Will Smith, Jared Leto, Margot Robbie, Joel Kinnaman, Viola Davis, Jai Courtney,...