I definitely get what Blizzard has been saying, but the evidence is pretty overwhelming; We have Emberthal and her Weryn using melee weapons, and the Evokers have weapon proficiencies that only melee specs can use effectively. I don't see Blizzard giving them a melee DPS spec, because that runs too much into Enhancement and Survival. However, there's no tank spec in the mail column, and we're dealing with black dragons who utilize the earth element.
If we really think about it, no other role is better for boosting allies and debuffing enemies than a tank.