Depending on the concrete success of Wonder Woman, a sequel and the Batgirl movie could be put on the fast track to monopolize on the theoretical success.
Zack Snyder has confirmed that Warner Bros. intends to make Wonder Woman 2, while Deborah Snyder claims that Batgirl will happen first.
Arthur Wong tweeted that he spoke to Zack Snyder and Deborah Snyder briefly and asked them about the possibilities of a Wonder Woman sequel.
It is not clear how Batgirl will be introduced, but it appears that the movie will hit the big screen before we see the sequel for Wonder Woman.