https://www.pcgamer.com/the-elder-scrolls-legends-next-expansion-will-feature-the-daedric-prince-of-madness/

Today's QuakeCon keynote was heavy on big guys with big guns, but sandwiched between all the gunfire and gibs was a quick, almost off-hand announcement of the next expansion to Bethesda's CCG The Elder Scrolls: Legends, called Isle of Madness. 

Elder Scrolls RPG veterans may recognize that title as a reference to the Shivering Isles, home of Sheogorath, the Daedric prince of madness, and also the title of (and setting for) the second expansion to The Elder Scrolls 4: Oblivion. (The picture in the tweet may have given it away, too.) And yes, the Mad God has come to play: "Wabbajack in hand, his brand of unpredictability tinges not just the quests you’ll encounter, but also the cards you earn for your Collection," Bethesda said.