In the case of The Batman, Robert Pattinson’s Bruce Wayne won’t be tracking down Holiday, but rather Paul Dano’s Riddler, who’s killing people on any day he pleases. Nevertheless, The Batman does seem to maintain some of The Long Halloween’s spirit, including Catwoman and Carmine Falcone, major players in the original story, being present in the movie. This won’t be the first time a live-action Batman movie has drawn from that particular story either. The Dark Knight had shades of The Long Halloween, including putting its own spin on Batman, James Gordon and Harvey Dent’s rooftop meeting where they agreed to work together to bring down organized crime in Gotham City.
Article source: https://www.cinemablend.com/news/2568770/why-dc-writer-tim-sheridan-thinks-madness-matt-reeves-the-batman-not-draw-the-long-halloween