I'm not an expert in business or legalese, but it sounds like this move is less concerned with the actual publishing output of DC Comics itself and more concerned with making more money out of the large amount of cultural icons Warner has at it's disposal via DC. Which, considering how well things like Superman Returns went over, is a smart move. It's probably way too early to tell, but as of now, I predict no major shake-ups other than more agressive marketing and possibly a line of movie tie-in comics.