Originally Posted by
Bored at 3:00AM
Not quite, Batman vs Superman was released in March 2016. Principal photography of Wonder Woman had already begun on November 21, 2015, but it didn't finish until May 9, 2016, which was after the backlash against BvS's tone was very clear and regime change at DC Films had taken place. The film also had additional reshoots in November of 2016.
Both Patty Jenkins and Gal Gadot have explicitly stated that the ending of the film was changed because it had become clear by the end of filming that their Wonder Woman would never give up and walk away from humanity, necessitating the clever retcon by re-contextualizing in Justice League of her absense as simply working in the shadows, rather than the light as Superman had done prior to Zod's invasion.