“Getting the other Doctors involved would be very fitting for the anniversary episode, wouldn’t it?” It also claims he said that the fact the broadcast of An Unearthly Child was delayed by more than a minute by an extended news bulletin would be referenced. Erm, okaaaay?
The article also says (grain of salt, everyone!):
*The Special will reunite all incarnations of the Doctor.
*One, Two and Three would be included in the feature-length special using computer generated images and old footage.
*The special episode is likely to provide the exit point for Smith, who is expected to regenerate into the 12th Time Lord.
Full article here