With no lead officially cast in Martin (Casino Royale) Campbell's take on the DC Comics superhero Green Lantern, Warner Bros. has decided to push the Emerald Knight's big screen debut back six months to June 17, 2011 from its original scheduled date of December 17, 2010. No word whether this will affect the plans to start shooting in Australia in September or whether the move is to give Campbell more time for post-production and special FX.