Re: One last surprise?
True dat, but if we see him again I imagine it's the one that is close to the time we see in 'The Day of the Doctor' since it will be our first introduction to him and in a way the 10th and 11th Doctors. If they decide to use the Hurt Doctor again then not having a regeneration/defeat at the hands of 10 and 11 might play better if he encounters 11 or 12 in future.
"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