The BBC have released some casting details regarding the 2010 Doctor Who Christmas Special. Joining Matt Smith, Karen Gillan and Arthur Darvill are Michael Gambon and Katherine Jenkins. You can read more about the news HERE.

ETA: BBC reporter and fan Lizo Mzimba has suggested through Twitter that the story is called Father Who? and it's a "twist on A Christmas Carol." You can read the official press release HERE.