A new clue about the series 7 premiere of Doctor Who has popped up, thanks to the schedule from the Media Guardian Edinburgh International Television Festival. The festival will be showing the first episode of the series between August 23 and August 25, and its still-unannounced television air date will likely follow in September.
Meanwhile, showrunner Steven Moffat has been talking up new companion Jenna-Louise Coleman, who will make her debut in this year's Christmas Special. Apparently, she's not like all the other companions, despite fitting the "young, attractive female" mold.
I'll answer you in the show about how it's going to be different. But because it is going to be different. It's going to be a shock, I think. In terms of the companions all being 'the same'—that's not as phony or artistically crap a thing to say as it sounds. What is the base group of people who would run away with the Doctor? They're all going to be a bit mad. A bit dislocated. Not happy with where they are. Are they yearning for outer space? They're going to be people who feel like they can take on the Doctor, who's quite an intimidating sort of person. So, they're going to be feisty—they're going to be all those things. He sort of defines the people who are going to travel with him.
Moffat has previously said that the new companion's identity will be quite a shocker and "one of the biggest mysteries the Time Lord ever encounters," so there's definitely more to the story than "she's a bit mad."
Looks like we'll have to wait until Christmas to find out what it is, though.