I can agree with Shamans gaining a fourth spec in Tanking, but not with Warlocks. There's already far too much competition for hit cloth with all mages, all warlocks and shadow priests able to use it. Any cloth without spirit or hit on it is fair game to all 9 specs. Unless the Warlock class gets altered to using Int Plate, I can't see it happen.
I can also agree with Monks and Paladins also getting ranged specs to make use of Int Plate, and Int Leather. Another user of Int Mail would be nice.