Per Variety, DreamWorks Animation has moved up the release of Monsters vs. Aliens, its first pic produced in stereoscopic 3-D, to May 15, 2009 - a week before James Cameron's 3-D Avatar is set to bow.... John Leguizamo has joined M. Night Shyamalan's The Happening, playing Mark Wahlberg's best friend.... Ron Howard is set to direct an adaptation of The Emperor's Children, Claire Messud's novel about Ivy League grads snobbing up Manhattan.... Oscar-nominated screenwriter Michael Tolkin is penning Rob Marshall's big-screen take on Nine.