From Variety:
Mark Millar made this comment on his site:While Disney and Marvel were busy shooting "The Avengers" last year, Warner Brothers quietly began getting its own all-star superhero pic back on track, tapping "Gangster Squad" scribe Will Beall to write "Justice League," based on the WB-controlled stable of DC Comics superheroes.
Warner Bros. had no comment on the top-secret hire, which, due to its timing, was more in anticipation of -- rather than a reaction to -- the box office success of "The Avengers."
Beall has yet to turn in his "Justice League" script, though he has become a favorite scribe of Warners. He's writing the studio's "Lethal Weapon" reboot and its remake of "Logan's Run," which is expected to reteam "Gangster Squad" thesp Ryan Gosling with his "Drive" director Nicolas Winding Refn. Warners will release "Gangster Squad" on Sept. 7.
A pal of mine is good friends with the new Justice League screenwriter and said his take on the team is incredible. Very real-world and not at all what you might expect. WB has a chequered history with their superhero characters. They're great with their boy wizards, but less consistent with their DC stable. But my chum said that this could be a thing of beauty and has been in the works for a little while now, not just an Avengers knock-off. Best of luck to them. The tidbits I heard sound quite dark and mature, which isn't what I expected. But word on Gangster Squad is great too so I feel this is in really good hands.