According to an article on computersandvideogames.com, the Elder Scrolls V: Skyrim’s next DLC will be named “Dragonborn”.
Uncovered files were found by PC players, which led to reports of the DLC returning to the setting of Morrowind from Elder Scrolls III, and the possibility of mounting dragons.
Also, according to OXM, quest markers for Solstheim, Telvanni, Castle Karstaag, Raven Rock and Miraak Temple have been discovered, alongside entries for four new possible armour varieties, including Bonemold, Chitin, Nordic and Stalhrim. With that said, files for mounting animations have been discovered by the same players on the PC, and spell-casting on dragons seems to be plausible as well.
Two DLC packs, Hearthfire and Dawnguard, are already available for download on Xbox Live and PC.
No release date has been confirmed for the DLC.