The last time he looked this scraggly was in Superman III, when Clark gives up his super powers to be with human love interest Lois Lane. In the original DC Comics run, issue 132 of Superman, published in 1959, it is explained that Kal-El's hair (both facial and scalp) and finger nails do not grow in earth's atmosphere (hence the always perfect curl), nor can it be cut by ordinary means. If Kent wants to give himself a haircut, he has to concentrate his own X-ray vision into a mirror and onto his scalp. The strength of Superman's hair is even tested, and becomes a crucial plot point in the critically derided Superman IV: The Quest for Peace. It is unclear at this time if Zack Snyder is simply changing this aspect of the character, having a superhero that needs to shave like everyone else, or if these scenes pertain to Clark losing his powers, or if he is out of earth's solar system for these particular scenes (that coat would indicate that he is not). Check out the images below.
Man of Steel comes to theaters June 14th, 2013 and stars Russell Crowe, Henry Cavill, Amy Adams, Kevin Costner, Diane Lane, Michael Shannon, Laurence Fishburne, Christopher Meloni. The film is directed by Zack Snyder.