Aftere clicking on the Source link after the Dance studio post I see that Zarhym is a bumbling idiot. In the last post of the source link a poster completely calls Blizzard out on lying and dropping the ball on the dance studio in WotLK, the idiot Zarhym can't defend himself/blizzard so he makes the snide remark of "I like apples and oranges, but not because they taste the same."
What I think that fool (Zarhym) is trying to get at is that important things to some people (dance studio) arn't as import to other people BUT that wasn't the point the poster was trying to make. It's not so much that it's being pushed aside it's that it has ben pushed aside so much that they broke thier "promise" that it would ever be released.
It's been pushed back because of Cataclysm? So whats next? it already took them a whole expansion to get nowhere with it. With blizzards lying logic it will never be finished as long as new expansions are planned anytime in the future. Next it will be pushed back for the hypothetical "Emerald Dream" expansion, then whatevers next. The fact that it was announced as part of the starting content of one expansion but was pretty much ignored until the next expansion releases. I've seen no progress, they just claim they have but even then scrapped it. After cataclysm they'll be focused on content patches and fixing bugs then the next expansion. Basically They should just admit they have dropped it! (it will just surprise people when you get off you're ass and finally do it)