Speaking from the Lucasfilm Limited headquarters in the Presidio of San Francisco, George Lucas announced today plans to start production on three new prequels for the Star Wars franchise. “These are prequel prequels,” said Lucas, “and they take place nearly 100 years before the events in The Phantom Menace.” Lucas explained he had been working on the scripts for the three new movies for the last two years, but the “ideas and inspiration have always been in my brain since …