According to comicbook.com, "Birds of Prey, the Harley Quinn team-up movie, is set to be the next DC film to start production, following Wonder Woman 1984. There have been several rumors online stating that production on Birds of Prey could begin sometime in 2019. While those have been nothing more than rumblings to this point, a new report is suggesting that star Margot Robbie has confirmed the start date, saying that films will be rolling in January.