The latest rumors and probable spoilers for the highly-anticipated "Justice League" movie will feature new speculations on how Superman will return and The Joker will have a cameo in the much-awaited DC movie.

There are several theories regarding "Suicide Squad" star Jared Leto making a cameo appearance in the "Justice League" movie. Cinemablend reported, as was speculated, Leto may reprise his role as The Joker in the much-awaited DC film during his trip to London, which happen to be where the set of Justice League takes place.

The Joker (Leto) is one of the main villains featured in "Suicide Squad" and will also be present in the new "Batman" solo film which is directed, produced and starred by Ben Affleck and was responsible for the death of Jason Todd/Robin before the events of "Batman V Superman: Dawn of Justice". There has not been any reports yet regarding whether Leto was on the set of Justice League, or if his London trip had anything to do with the movie since Warner Bros. has kept mum regarding the rumor.

There are also some new theories on the having the possibility of Superman (Henry Cavill) coming back from the dead in the "Justice League" movie, as per Screen Rant, Superman just in coma. The plot of the movie will have Batman (Affleck) seek out and assemble a team of metahumans comprised of Wonder Woman (Gal Gadot), The Flash (Ezra Miller), Cyborg (Ray Fisher) and Aquaman (Jason Momoa) to prevent a dark and powerful being known as Darkseid that threatens the earth. The coming of the New Gods is also speculated because of this plot.

With Superman's demise during the events of "Batman V Superman: Dawn of Justice", Lex Luthor (Jesse Eisenberg) declaimed that the forces of Apokalips will invade earth lead by Steppenwolf and take back the three Mother Boxes.

There are also several theories for Superman's return to the "Justice League" movie involving a clone of the last son of Krypton as there have been many several times that Clark has been cloned in the comics by the antagonist. The use of Kryptonian technology is also speculated to be a reason for Kal-El that were left during the "Man of Steel" film that can be used to revive such as the one used to reconstruct the remains of General Zod into Doomsday in the Batman V Superman: Dawn of Justice movie.

Zack Snyder's "Justice League" is scheduled for release on Nov. 17, 2017, while a sequel is slotted for release on June 14, 2019.