VIDEO : 'Birds of Prey' And 'Gotham City Sirens' Crossover Rumored

The world just got a first look at DC and Warner Bros.' upcoming Birds of Prey movie, but there are already rumors of some major things in the works for the franchise. A new report about the future of the Batman franchise happened to include a little footnote about Birds of Prey that has some major implications. Word is, Warner Bros. is planning to have Birds of Prey and the Gotham City Sirens movies crossover in a major event film! And with Birds of Prey rumored to lead to a trilogy comprised of Gotham City Sirens and Birds vs.