the convention took a year off from the event.
At the convention many things were touched upon including the Diablo 3 auction house debacle and an apology from Blizzard about that.
But at the end of the day the best was kept until then end when Warlords of Draenor was announced. While no release date was set it was announced that the expansion would include new 3D models of characters and a new garrison system where players can build there stronghold within the expansion and they said the missions will depend on the type of stronghold you have. Other details are scarce but you are also able to hire NPCs to hang out in your stronghold.
It was also mentioned that Blizzard will offer former players a “Call to Arms” so they can reach level 90 instantly and fully enjoy the expansion.
The expansion follows Mists of Pandaria which was the last expansion of the game to be released.