TheWrap reports ABC has ordered three additional episodes of its long-running hit series ?Grey?s Anatomy." The show's 15th season will now have 25 episode, making it the show's largest season since its third, which ran for 25 episodes in 2006-2007. The show?s second season included 27 episodes. "Grey's" is set for a midseason return Jan. 17. Series star Ellen Pompeo has hinted that she may be ready to move on to something new soon.