Also, Terry Pratchett has been tweeting elusively about some sort of meeting/discussion with Mr Moffat. What this all means is anyone's guess. It's unlikely that he'll be writing a Doctor Who episode (to the best of my knowledge he has no screenwriting experience; not that that would totally rule out the possibility, but it makes it unlikely). Maybe a Doctor Who novel, following on from Michael Moorcock's one and the one Stephen Baxter's doing?
And Roy Skelton, voice of the Daleks (and Zippy in Rainbow) has died. :o(