On March 23 2012 HBO released their "You Win or You Die" featurette via youtube. The featurette is a first season retrospective and second season preview and runs 22 minutes. It features brand new interview footage with David Benioff, D.B. Weiss, Peter Dinklage, Emilia Clarke, Kit Harington and Nikolaj Coster-Waldau along with clips of both seasons.
What do you think? I'll come back later with a list of the new second season footage.