Check out this listing blurb.
The two-part Christmas special will see David Tennant wave goodbye as the 10th Doctor. Featuring a past Doctor, old sidekicks and other familiar faces - John Simm, Alexandra Moen, Timothy Dalton, Bernard Cribbins, Catherine Tate, Jacqueline King, June Whitfield, Billie Piper and Freema Agyeman join David for his final shows. As all three of his companions are set to marry, what will be the fate of the Doctor?
Harold, Laredo and Kat are putting money on Eccleston. What about you peoples?