ZeniMax announced this past week that it is giving away a free Nix-Ox mount to all players who have purchased the Morrowind expansion. To claim the mount, you will need to log into the game by November 26th. And yes, this promotion is good for anyone who decides to purchase and play Morrowind over the next week as well!
This is the latest in a string of promotions and deals for Elder Scrolls Online around its anniversary. Recently, the game gave out a pair of clockwork pets and deeply discounted some of its DLC packs.
Source: Elder Scrolls Online. Thanks Ekl!