A major player in the production and engineering of Kanye West and Jay-Z's joint album, Watch The Throne, has confirmed that a follow-up is indeed in the works. Mike Dean revealed the news in an interview with Quiet Lunch, in which he also discusses a slew of other topics.
But at around the 5:30 mark in the above video, Dean makes it clear that he's starting work on the second Yeezy and Hov album soon. He also mentions that he's got a hand in the G.O.O.D. Music compilation, Cruel Summer.