Its official, WB has handed over the playing field to Matt Reeves and he can mould "The Batman solo movie" as he pleases without any interference from the studio (WB notoriously messed up with the Directors-Cut of Batman V Superman & Suicide Squad).
An excerpt from the conversation Matt Reeves had with Uproxx recently:-
So the answer is yes, you did want assurances [before signing on to The Batman]. Maybe assurances isn’t the right word…
Reeves: No, it is.
So you are telling them, “Here’s what I want to do with Batman”?
Reeves: Yeah. When I come in, what I say is, “Look. First of all, you’re asking me if I’m interested in this franchise. I am. I love this franchise. I’ve loved it since I was a kid. But here’s the way in which I’m interested in it. And if you’re not interested in it in that way, then that’s totally fine.” And the good news was, they said, “Yeah, we’re really interested in that way.” And I remember this on Dawn, too. There would be moments where I came in for a pitch that was a certain version of the movie, and somewhere along the way, because they didn’t know me or whatever it was, they’d say, “Why don’t we do this?” And I would just simply say, “But that’s not the movie that we talked about. That’s not the movie I want to do.” And I have to say that they always backed down when it came down to that. And it’s kind of the way that I’ve always done it. And here’s the thing: I’m always happy not to do something. I’m usually looking for the reason to say no.
This is great news for the community as a whole, because now we get to see a passion driven Batman movie & maybe its time we finally receive the movie that holds its own, rather than being compared to the Nolanverse! Godspeed to you Matt...