The only film involving these characters Warners has confirmed is Suicide Squad 2, which was one of eight movies revealed at SDCC 2017.
The biggest thing to remember here is that these movies are in the early stages of development and none have been officially announced.
One thing we can conclude resolutely, though, is that Warners are pretty keen to invest more in the Joker.
There’s been a lot of Joker-related movie news recently, but one film related to the Clown Prince of Crime appears to have fallen by the wayside: Gotham City Sirens. Has it been canceled?