Looks like we finally have a trailer for the Extended Edition of Desolation of Smaug, and yes, Thrain is in it. We no longer have to wonder what ever happened to that shadowy figure in Dol Guldur. This version Extends the original Theatrical Release by 25 minutes, plenty of time to see more details, get more action, and learn more about some of the characters. You will finally get to see all additional 25 minutes on November 4, but for now just this preview. The Trailer is on Yahoo Movies and after viewing, you can enter to win a prize, so double happiness to be had.
Without further ado, here is the Trailer.