Re: It's official! Neil Gaiman episode to feature...(spoilers)
Yep, the fact Coleman doesn't yet have a name obviously means something's up. Almost certainly somehow she will be related to Oswin.
I'd bet my house that the Doctor will work out somethings up when she mentions souffle. I'll be dreadfully dissapointed if that's not how he works out it's actually the same person, perhaps split over multiple time periods like Scarlioni in "City of Death".
I'm being extremely clever up here and there's no one to stand around looking impressed, what's the point in having you all? - The Doctor, interrupting a very important conversation.