Well, they said recently on dragoncon that most specs are being remade, some will even be renamed, all in order for the specs to fit in the class fantasy and feel unic, and now theyy are making hunter surv a melee pet class so unholy is no longer the only melee pet class, hunters even got a death grip. So in order to make unholy feel unique again they would make it the ranged plate caster, or perhaps take the pet away and make unholy all about dots, being the melee dot class.