The most recent JLA casting rumour from movieblog.ugo.com
"Transformers star Tyrese Gibson is in the running to play the part of Green Lantern John Stewart in the Justice League of America movie. I learned this information from a source who added the preference that Tyrese is merely one of several potential candidates that Warner Bros. is considering for Green Lantern. Whether or not Tyrese lands the part remains to be seen...."