Doctor Who (series 7)

This show has been going forever, but seems to have boxed itself in to a conclusion.  We already know two things:

ONE is that Dr Who dies when he is 1100 years old – and does not regenerate.  He is played by Matt Smith – so that indicates Smith is the last person who will play the Dr.

TWO is that the person who kills him is probably River Song – who died and was saved in the library computer … before the Dr. is killed.

We therefore have an interesting temporal structure developing.  We also need to discover who actually kills WHO …