Peter Safran and James Gunn have outlined their plans for the DC Universe, including how movies like The Batman and Joker 2 fit into their connected storyline.
There's one scene in The Batman when we get to see Robert Pattinson's Bruce Wayne clean up, put on a suit, and rub elbows with Gotham City's elite. But unlike previous Batman films, he's not doing it at a charity gala or an upscale hotel where he can flirt with the city's most beautiful women. This time he's at a funeral, and he barely looks like he took the time to comb his hair.