i think this doctor is the sub conscious of all the doctors. dealing with the time lords on trenzalore. now knowing there's a part of galifry out there. Possibly going back to the silence. I wonder if he's going to go darker than before.
Myself always been a fan of Devros'EXTERMINATE , KILL THE DOCTOR ! ! ! !
Till the scariest of them all were introduced.what ever you do don't BLINK
For you folks ( kids) who never watched the older Dr. Who's. The Tom Baker version figured out a way to stop the dalects, any guesses?