Below is what SFX reports from the book.
About the Christmas special Moffat said:
“This one’s incredibly Christmassy. That’s true of the previous ones but I wanted to go for broke. It’s easily the most Christmassy thing you’ll ever see. It’s a huge, sentimental, lovely, jeopardy-driven story. It’s the Christmas special I’d like to see. It’s like a compilation of every Christmas movie. A big Christmas treat. But that doesn’t mean it’s without scares, and that doesn’t mean it’s without heartbreak. It has genuine tragedy in it.”
About the mysteries that will take place during Series 6 - basically we're talking the story threads picking up right from series 5 - the Doctor Who showrunner revealed:
“Nothing will be left hanging forever. Some things will be addressed relatively quickly. We’re going into the silence and what they [our italics] are… There’s been a sort of tradition, which I semi-followed through with the crack, of there just being a sort of meme through the series, and I think, actually, a bigger mystery and a bigger story is possible now. I’m going to handle it slightly differently next year.”Moffat also adressed the whole River Song thing and that we will soon know about her identity, saying that:
“That’s absolutely coming. You’re going to find out very soon, and that means we have to do it next series, really… The critical thing here is I want to explain who she is, not explain away who she is. If you don’t deliver on most people’s expectations, and you just say, ‘Ooh, she’s a specially programmed android who believes she’s the Doctor’s wife,’ people will go, ‘That‘s a cheat.’ You can’t do that… It’s a really good story, and it’s sort of the story of next year.”Well I do hope they wont come up with something so cheesy as someone programmed to be the Doctor's wife or something similar!
Are we Christmas yet AND next season yet?