The director of The Batman, Matt Reeves, confirmed that the film will not be an origin story.
While talking with Nerdist, here is what Reeves said about the movie:
I wanted to do not an origin tale, but a tale that would still acknowledge his origins, in that it formed who he is. Like this guy, he’s majorly struggling, and this is how he’s trying to rise above that struggle, but that doesn’t mean that he even fully understands, you know. It’s that whole idea of the shadow self and what’s driving you, and how much of that you can incorporate, and how much of it you’re doing that you’re unaware of.
I’m happy that this is the direction Reeves decided to go with. We know the on why he’s become Batman, we’ve seen it so many times. Hell, I’m happy that we might not even see the Waynes get shot in the alley for the billionth time. Also, it makes me wonder how established are the villains in this universe with the many characters in this film.