It would appear with this announcement that Warner Bros. is trying to get the jump on things, and potentially raise hype for Suicide Squad. Just after the announcement that DC's first female-lead film, Wonder Woman, had wrapped filming, the studio has announced that a new project surrounding Harley Quinn is in the works. And yes, they are retaining Suicide Squad actress Margot Robbie for the role.
It doesn't look like this will necessarily be a solo Harley Quinn movie as it will apparently feature other DC Comics villains and heroines, but it is said to be centered around Harley. Already rumored additions for this female-driven project include Batgirl and and Birds of Prey. Depending on how Suicide Squad turns out, we also might see Katana and/or Enchantress again. Margot Robbie will star and produce the film, Collider is saying there is no word yet on who will direct or pen the script. It has also been said that Robbie is the main force that streamlined this project through.
From what I have seen so far, it would look like Harley Quinn is the main focus of Suicide Squad's marketing so this is a good decision by Warner Bros. Not only should it increase buzz surrounding Robbie's portrayal of Harley Quinn, but a future project featuring the character it will definitely pay off if Suicide Squad turns out to be a hit with audiences. After the reviews and opinions of Batman v Superman: Dawn of Justice, Warner Bros. could use a smash hit right about now.
This new project joins a rather long list of upcoming WB releases including a solo Batman film to be directed by Ben Affleck, Justice League, Wonder Woman, The Flash, and Aquaman. The Flash just lost its director so it would appear WB is shifting some of their strategy in the wake of Batman v Superman. A new female-driven movie for DC could also be a response to Marvel Studios executive, Kevin Feige, announcing that he was interested in a solo Black Widow film. Basically, people were asking for more girl power in the superhero film universes and we are getting just that in full force.