The picture and audio upgrade on Mystic River looks as good as one would expect from a film from the last ten years. All the 3-DVD special edition extras are retained with the exception of the score CD. The slimmer, sleeker container for the same content in higher definition is much preferred. I also do not miss the reams and reams of quotes and accolades.
Everything being on one disc is nice for convenience, and there aren't so many extras that this would adversely affect audio or video bitrate. Also not missed is the reference to the disc including "The Academy Award-winning film by Clint Eastwood". We got it, already.