As we continue to wrap our heads around last weekend's Doctor Who finale, The Big Bang, inevitably quite a lot of attention - given the loose threads that were deliberately left dangling - has turned to what's going to happen in the sixth series of the revived Doctor Who.

Show boss Steven Moffat has been answering that very question, telling Doctor Who Confidential that two of the big story mysteries will be resolved.

"What is that, who is that, who are the silence, what's coming?" teased Moffat. "The whole point of the silence is next series. Also, River Song ... who is she really? That's what we're going to find out next year," he said.

Also, Steven Moffat has revealed to Digital Spy just how far into planning series six he is. "Not far enough, I think is the answer to that!" he told the site. "I've got lots of plans - plans are not nearly as useful as scripts, I find - so I'd like to have more scripts and fewer plans. We're not quite as ahead of the game as we were last time. But it's fine."

It's unclear yet how many episodes of series six Moffat himself will be writing, but that should become clear in the months ahead, along with the identity of some of the other scribes working on the next series of the show.