The sequel to the 2019 film has Joaquin Phoenix reprising his role as clown Arthur Fleck.
Titled Joker: Folie À Deux, the film has Lady Gaga as Harley Quinn, Arthur's love interest.
Filming for Joker 2 had reportedly started in December 2022 and ended in April 2023.
The movie was mostly shot in Los Angeles, New York and Essex County Isolation Hospital.
Just like Joker, this film will also have its world premiere at Venice Film Festival in September.
Film's first trailer shows the couple causing chaos and havoc throughout Gotham City.
It also has sequences of the two meeting for the first time and dancing together.
The second trailer, released in July, shows Phoenix and Gaga lost in the musical sequel.
As per IMDb, Joker 2's plot is about "a doomed romantic misadventure" of the lead duo.
Joker 2 is set to release on October 4, exactly five years after the first film.