LOS ANGELES: Arnold Schwarzenegger is changing his famous catch-phrase to “I'm back” from “I'll be back.” The former governor of California said Thursday that he was returning to his former role as a Hollywood action hero. “Exciting news,” he wrote on Twitter. “My friends at CAA (Creative Artists Agency, his talent firm) have been asking me for 7 years when they can take offers seriously. Gave them the green light today.” He returns to film as Hollywood suffers from a lack of brawny, laconic action men.