Diana's origin story has its own ups and downs, and certainly far from the perfect movie that DCEU needs right now (yes, personal opinion from a DC fan regrets to say that WB is still waiting for a true home-hitter in terms of seamless narrative). However, Wonder Woman certainly made a lot of improvement from previous movies, one that put it way above any other DCEU film in recent memory.
And with its stellar performance at box office, it's a wonder that a sequel hasn't been officially announced yet. Be that as it may, it's also highly possible that the studio is already planning for it--with a subtle hint from The Hollywood Reporter's recent feature about the movie.
According to the report, both Gal Gadot and director Patty Jenkins are under contract for a second film. Perhaps this is why Jenkins has been very keen on exploring ideas for a possible sequel.
In a previous interview with Entertainment Weekly, she gave her thoughts and ideas about a possible sequel--and it looks like a good fit for a follow-up to extend the DCEU for another ensemble movie after Justice League.
"The story will take place in the U.S., which I think is right. She's Wonder Woman. She's got to come to America. It's time."
For Jenkins, a sequel would be a great story to tell, more than just a necessary follow-up. If done right, it could open a new avenue for how DC and WB can extend the movie franchise without sounding forced. If we could make a recommendation, perhaps another woman in the writer or producer pool wouldn't hurt--especially if the goal is to bring about Wonder Woman's heroism (and only hers) at the forefront.
Wonder Woman is showing in all theaters worldwide.