Although I haven't seen it officially announced, Robbie "The Fire" Bernstein is rumored to be appearing at PubKey in New York City on October 30. No other details are available. I talked about the possibility of him appearing in this post
You may know of him from his podcasts and his work with Dave Smith on Part Of The Problem.
If you're around, plan to go. PubKey is a bitcoiner's home away from home, and Bernstein is a very funny guy and a fellow bitcoiner.