Marvel Studios released the teaser trailer for the third part of the "Iron Man" series which is 10 seconds long only."Iron Man 3" is expected to hit theaters in May 2013 and the official trailer of the film should be released tomorrow 23 October.Directed by Shane Blake and starring Robert Downey Jr., Gwyneth Paltrow, Don Cheadle, Ben Kingsley and Guy Pearce – "Iron Man 3" is a new but very dangerous adventure of Tony Stark who faces his toughest opponent.