User blog comment:Blood Reaper/Todd Howard Hinting at Future DLC's and Patches/@comment-2219562-20120218033537/@comment-4851212-20120218215455

only the "Dark brotherhood forever!" quests. It's basically where you go up to the night mother and she provides you with a random contact, then the contact orders you to kill a random person, a "travelling noble" for example. You get rewarded with some coin and then it ends. Oh and this quest is never ending if you didn't already know..