Promotional shots like this are important for marketing, even if they don't tell us much about the actual show yet. They can pique audience interest, as with the first glimpses of the new Amazing Spider-man or the highly anticipated Man of Steel, or they can backfire, such as the cheesy Wonder Woman pilot that eventually was rejected.
Based on this picture alone, it appears as if the CW network is borrowing a bit from the hoodie-costume look of the Smallville version of the hero, but upgrading it to a darker, grittier feel. We shall wait and see if it's a hit or a miss.
Chime in with your own reactions and let me know what you think.