Is it time for some wild, unfounded Doctor Who speculation yet -

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now the title of this years special's been confirmed as being The Next Doctor? it's suggested that the specials will be linked to each other so who thinks that this will be the begining of a story arc leading to David Tennet leaving. Maybe he'll meet somebody who's a possible future incarnation or it could turn out to be a teaser/fan bait title like the old (80s) false leaked episode "The Doctor's Wife" or as much of a red herring as "The Doctor's Daughter" turned out to be (not his daughter just a clone) Who thinks we could end up having a plotline where the Doctor is unable to regenerate (because of the whole hand/DocterDonna regenrative energy thing) and is forced to go back and risk Donnas's life to save his own?