WORLD OF WARCRAFT: THE LEGION RETURNS
NEW HORDE RACE: OGRE
NEW ALLIANCE RACE: HIGH ELVES
NEW ZONES: THE OTHER SIDE OF THE BARRENS, ARGUS, THE DEMON HOME WORLD, VELLEN'S BATHROOM
NEW RAID: THE DEMON LORD'S CASTLE
I mean, it's pretty easy to spot bad fan speculation, and while it's not unheard of to see well put together fake leaks, the fact that this leak contains lots of stuff like "No new race, class or models" and the simple variation and, well, 'professionalism' of everything- not to mention the fact shit like this gets leaked every single expansion right away, it's difficult to just write this off as 'a big fake'.