The return of Michael Keaton’s Batman in The Flash sparked hope for other characters from Tim Burton’s Batman universe to return to the big screen, especially Michelle Pfeiffer’s Catwoman, but the new DC Universe and Batman plans are putting an end to those hopes. The multiverse is a concept that is being used in the two biggest connected superhero universes in film and TV, and it has allowed them to bring back characters from past movies to either give them new adventures or bring closure to their stories.
https://screenrant.com/batman-dc-universe-plans-michelle-pfeiffer-catwoman-bad/