I'm supposedly getting it on release day from Amazon, but I'll wait and see what happens. Thankfully, not all businesses run like Blizzard so I do expect delivery from Amazon on their communicated date.
And yeah, I can't wait for another 10 level rep grind. But at least we can do it against slightly reskinned mobs in slightly recolored environments?
To be honest, the only reason I'm looking forward to the expansion is that it will end all the stupid pre-expansion crap (zombies, plagues, dumb stuff in Org, SW, etc.).
The most significant change ever - linked auction houses. We didn't even have to pay extra for it