.....at least according to Steven Moffat in a new interview.

http://www.radiotimes.com/news/2013-10-1…

As we approach the 5oth anniversary and the Christmas Special, the number of regenerations the Doctor has left has become a pretty contentious point for some Who fans. Moffat seems to be on the side of 12 regenerations/13 bodies and is now saying that Who fans need to recount the Doctor's regeneration.

Personally I'm not a fan of this, because we all know that we are going to end up with more Doctors whatever number of regenerations have occurred. That being said, the theory I like that I saw on another site was that Meta Crisis 10 and the Renegade(Hurt Doctor) now push Smith up to the 13th and supposedly final Doctor, make Capaldi's Doctor......what?