The Doctor is returning.
The announcement also revealed that Doctor Who executive producer Steven Moffat is "already plotting a brand new run of adventures for the Doctor." Brian Minchin will join Moffat as executive producer.
Matt Smith, who has played the Doctor since 2010, said in a recent interview that he will return for season eight.
The 50th anniversary special will feature Smith, Jenna-Louise Coleman, David Tennant, Billie Piper and John Hurt, who was seen in the season seven finale.