Has someone already seen a heirloom item from Garrosh? I'd like to know if they are upgradeable because currently there are two conflicting stands on that:
* Ingame dungeon journal and WowDB show them as not upgradeable.
* Wowhead shows them as upgradeable and Twitter messages from Ghostcrawler and Bashiok say that they are upgradeable (and should be BiS for most).