Okay now i dont know about any of you but i have been keeping track of these 2 models with every bit of my being.
These two models have had NO details on them wich brings me to believe that these are the new troll and orc models for in game.
Of course i could always be wrong but lets look at the details i have. Blizz stated them selfs that the troll and Orc would be the first on there list for Graphical changes. They also stated that they will be working on them throughout this expansion. (if you need the proof just go to the first week that MoP came out on MMO and see for yourself.) Now of course this is all hear say and im most likely just another tin foil hat person, But if you think about how much has NOT been said about this subject by the devs and how much has NOT been said about these 2 models since they came into the community's eyes.
So in my opinion and if my history and details prove me correct then these will be the 2 new models for playable characters in WoW.
DO NOT quote me on this as no one is correct untill the appropriate details are in place.