New Doctor Who Announcement Coming Sunday

However, Starburst Magazine is reporting that the announcement will actually be for a show that will air on Sunday that will reveal the new Doctor Who. The BBC has reportedly shifted this Sunday night's 7 PM edition of Celebrity Mastermind on BBC One to make room for the 12th Doctor Who announcement.
The announcement will reportedly be made in front of a live studio audience, who were told they would be attending a pilot for a show looking back at the fifty year history of Doctor Who. Any guesses at to who the new Doctor Who will be?