Catwoman Looks Unlikely to be in Ben Affleck's 'The Batman'by HaydnSpurrell
Ben Affleck's Batman project is being kept tightly under wraps, and not much outside its hero and its villain is known. It does seem, however, that Sienna Miller, who worked with Affleck on Live by Night, is putting her hand up for a role that, according to her, isn't in the script.
Miller told Comicbook.com that Catwoman is "not in the script but I wanna write her in!" So it seems that, as of now, Catwoman is not in the script for The Batman, Nor has the character been teased in a previous DCEU movie, whether that be Batman v Superman or even Suicide Squad.
There's no doubt the character will show up in some capacity in the extended universe, though maybe they're saving that for the Birds of Prey/Harley Quinn film, which could find a way to slot the female anti-hero in among the rest of the girls.