UPDATE: 12/02/2008: George Miller is still on board. Via Dark Horizons:
A representative from Kennedy Miller Mitchell has categorically denied Monday’s scoop that Dr. George Miller is off the ‘Justice League’ project. They have confirmed that Miler did not appear on the ‘Sunrise Morning Show’ let alone discuss anything to do with “Justice League” or “Mad Max”.
The original scooper, a usually reliable source, also seems to have vanished into the electronic ether. As for their current status? The KM rep says both ‘League’ and ‘Max’ are “being seriously worked on.”
Original post follows below
Director George Miller has confirmed that he is no longer involved with Warner Bros.’ Justice League project. According to Dark Horizons, Miller also indicated that if the project gets going again, he expects that it will be recast because “the studios seem to want bigger stars in their superhero movies now.”
Miller also said that he would like to work with Mel Gibson again and revealed that although Gibson doesn’t want to do the Mad Max script he has written, he hasn’t given up on the possibility.