I can't believe what I'm watching these days from various websites of people who are in the Beta. I recently just watched the video over on Tankspot.com featuring the quest that takes you in Uldum for the first time. For those who haven't seen it, and those who are not wanting to spoil anything, I will say that questing doesn't even feel like World of Warcraft any more.
How things play out, it feels something like something you'd play on a console or in a single player game, where control is taken away from your character and a cutscene is played out within the game engine. At any moment during the quest, the camera will suddenly zoom in on a point of interest, or show what is happening from a different angle.
Everything we saw at Last year's Blizzcon is nothing compared to what we're seeing now, and what we can expect. It really does feel like World of Warcraft 2.