Quote from ADePALMA1251
I'm pretty sure that "reboot" is actually just Darren Aronofsky's cancelled Batman: Year One film, which is supposed to be turned into a graphic novel soon. The script was written by Aronofsky and Frank Miller, and featured many changes to the original story. I read some of the script and thought it kicked ass. Now Warner Bros. thought differently and decided to go another root with Christopher Nolan. And well, the rest is history.
Here's the script.
Actually, its in production. It's not Batman: Year One. It's called The Batman
i found this. Not sure if its useful info.