Thanks to Robert for the heads up.
As always take this with a grain of salt
Today the Daily Mirror have reported that ALL 11 Doctor’s will make an appearance in the 50th Anniversary episode. The first 3 doctors will make an appearance via imagery or CGi and the remaining will appear in cameo roles. They are also predicting a regeneration of Matt Smith to introduce the new 12th Doctor.
Personally I think it would be cool to see him regenerate into previous versions of himself to help him remember previous enemies (for example he could not remember the great intelligence in the Xmas episode). How would you like them to appear? Sound off below
Original Source: Daily Mirror