So far, no game has managed to make all races identical and just cosmetically different - there are always some stat changes.
Which is also the cause for my lovely dwarf
(who formerly looked like this)
to now look like this:
Taller, certainly, but more importantly: possessed of Diplomacy. Which will come in extra handy with all the new factions in Cataclysm. And then, I'll probably go back to dwarf - which has great tanking specials.