Today I watched the video run though of the new heroic deadmines. I gotta say. What a amzing instance they have done! Sure still needs some tuning but overall it's looking like a fun heroic. I'm not going to spoil it for you. But the content isn't recycled. The bosses are all NEW! That's right. No Naxx 2.0 lame stuff.
Can't wait to see what blizzard is going to do in the future with raids!