From Doctor Who TV:
Will River Song return for more adventures with Peter Capaldi’s Doctor? It’s unclear at present, but one thing is for sure, Matt Smith isn’t so keen on the idea.
Speaking at a Q&A panel at last weekend’s New Orleans Comic Con, he said: “Don’t ask. I’m really possessive over Alex [Kingston]. I said this to Steven [Moffat]. I was like, ‘Listen, just don’t! Just not Alex. Anyone else, but don’t give [Capaldi] River.’ But Peter is the Doctor now so hey, what can I do?”
He adds: “I think that Steven will be planning things that are going to unfold over years and I think he’ll reinvent the folklore, and it will become Peter’s folklore.
“But I am really proud of the fact that Alex was part of number Eleven’s life. My wife!”
And just because I’m awesome 😉 I went out and found the video too!