For those keeping track at home, this now means that The Joker and Harley Quinn both have reportedly three appearances coming up in the DCEU.
First there’s this Mad Love-sounding Joker/Harley movie, and then there’s Gotham City Sirens, which will primarily focus on Harley getting into shenanigans with Poison Ivy and Catwoman, but will involve Joker in some capacity.
That said, Suicide Squad ended with Joker breaking Harley out of Belle Reve, so it will be interesting to see how these two become intertwined with Task Force X again.
In addition, the two villains are expected to appear in Suicide Squad 2, which isn’t terribly surprising given that they both made their DCEU debut in the first movie and that Harley has been tightly connected with the team in the comics since the start of the New 52.