We are one month away from the Doctor Who Christmas special and their official facebook page has shared the following image and the name of the episode. It's going to be called Last Christmas. In the image below we see The Doctor (Peter Capaldi), Clara Oswald (Jenna Coleman) and Santa Claus (Nick Frost).
The episode will be Capaldi's first Christmas special and rumors are that it may be Coleman's last. The BBC has refused to confirm or deny reports that Coleman is leaving the show, wanting it to be a surprise to the viewers which ever direction it goes.