The Flash director Andy Muschietti's recent response to a question about Batman: The Brave and the Bold led to speculation that he may be in line to helm the upcoming DCU reboot, and earlier today, a rumor that he's been "locked in" to the project did the rounds online.
Though we're still waiting on official word (James Gunn will likely weigh in at some point if this is accurate), reliable insider @MyTimeToShineHello is now claiming to have confirmed that Muschietti will indeed direct the movie, and he'll be joined by The Flash scribe Christina Hodson (Birds of Prey, Batgirl, Bumblebee).
Again, this should be taken as a rumor until we learn more.
UPDATE: It sounds like we might be waiting a while for some kind of announcement, as the Muschietti still can't talk about (potentially) directing The Brave and the Bold.
The Brave and the Bold won't be a direct adaptation of the comic series of the same name, but it will introduce the "Bat-Family and follow Bruce Wayne's attempts to wrangle his new Robin, Damian Wayne, under control in a father/son story."
"Directed by Andy Muschietti, The Flash features Barry Allen traveling back in time in order to change events of the past. But when his attempt to save his family inadvertently alters the future, Barry becomes trapped in a reality in which General Zod has returned, threatening annihilation, and there are no Super Heroes to help. That is, unless Barry can coax a very different Batman out of retirement and rescue an imprisoned Kryptonian…albeit not the one he’s looking for.
Ultimately, to save the world that he is in and return to the future that he knows, Barry’s only hope is to race for his life. But will making the ultimate sacrifice be enough to reset the universe?"
The Flash is produced by Barbara Muschietti and Michael Disco, with a screenplay by Christina Hodson, and a screen story by John Francis Daley & Jonathan Goldstein and Joby Harold, based on characters from DC. Warner Bros. Pictures presents a Double Dream/a Disco Factory production of an Andy Muschietti film.