Re: One last surprise?
I'm sure they can use stock footage. But will there be a regeneration or is this War Doctor a character we'll see more of in future. That's the question.
"It's not that you can see the strings, it's that 40 years later you're still looking at them." - Steven Moffat
"This movie was big. Imagine how big it could have been with me in it?" William Shatner