With the Patch 10.0.7 PTR build underway, several Orc Clan banners were datamined. These banners give new, high-definition banners of some of the more notorious Orc Clans in the history of Warcraft.
It is currently unknown if these will be attached to any rewards (like possibly cloak transmogs or toys) as only the banner graphics were datamined, but it does give a clue on what the Orc Heritage Armor questline will be about.