The solo JOKER film starring Joaquin Phoenix has a release date. Warner Bros is saying the film is slated for an October 4th, 2019 release date.
The film is described as an origin set in the 80s and will go into the backstory of the clown prince of crime.
Per Movie Web:
The Joker Origin Movie is going to take place outside of the DCEU and will tell a darker, grittier origin story for the Clown Prince of Crime. It has been reported that director Todd Phillips took some inspiration from the Killing Joke, though it’s believed that the film won’t be a direct adaptation. Joaquin Phoenix recently revealed that he wanted to do a small budget case study on a comic book villain a few years ago, which is why he got excited to try and take on the Joker in the new movie.
Details about the Joker Origin Movie are scarce since the production is still in the early stages of development. It has been reported that Frances McDormand was approached about plying the Joker’s mother in the film, but she turned it down. It has also been reported that Robert De Niro is in talks to play a small role as well. In addition, it is believed that Thomas Wayne will play a large role in the Joker Origin Movie, but that has yet to be officially confirmed at this time.
The Joker film will most likely have some more concrete information revealed during the WB/DC Films presentation in Hall H at San Diego Comic-Con 2018.