From GC on the tanking forums
We just think the current Frost dps tree is cooler than the current Blood dps tree. It's subjective, I realize.
That's kind of what I was saying. The Frost tree mostly works, so let's not reinvent it. The Blood tree needs a lot of work, and in the meantime DKs have some tanking problems, so let's fill up a tree that needs new talents with talents needed by tanks.
I interpret this as more or less "Blood is going to change a lot." That means that even if I hate blood now, that isn't guaranteed to be the case come Cataclysm. I mean, I used to love enhancement and now I hate it, so clearly Blizzard can go in at least one direction. Er. That was supposed to sound hopeful.
Hope! Change! Disease and pestilence!