Hmm, let me see, why don't I spend $700 on a player to get a highly anticipated movie and when the movie is released, everyone and their mom are watching it while you wait months to get it - in the end forcing you to buy the copy anyway.
How about you cut a deal with Warner to pack in Dark Knight early in Denon players before the general public gets it - or better yet, release a special edition package or extra that isn't available in stores. That at least creates a buzz around the player for a bit.