It definitely seemed like a (slightly clumsy) hint at the return of the Timelords to me - and why not? We all know that Donna's right, Gallifrey isn't lost forever, that really should be obvious to anyone. Since the start of series one, the Doctor's been insisting that the Time War ended everything, when in fact the Daleks reappeared barely minutes later, we found our first Timelord survivor in the last series, we already know that the Doctor - blinded by grief, loss, and guilt as he may be - hasn't quite got the certainty on this that he thinks he has, and anything could happen.
I don't believe this is necessarily anything to do with the "arc" for this series, or that the rest of the Timelords are about to appear in episode 13, it's just a long-running theme that's been floating around since "Rose", and is being kept alive by the writers in little dropped in snippets like this. They may never resolve it, but I'm surprised to read anyone suggesting that it's ever, truly, been ruled out by the "time war" or anything else. The Doctor is a Timelord, and that Gallifreyan heritage will never be far from the writer's thoughts.
I don't believe this is necessarily anything to do with the "arc" for this series, or that the rest of the Timelords are about to appear in episode 13, it's just a long-running theme that's been floating around since "Rose", and is being kept alive by the writers in little dropped in snippets like this. They may never resolve it, but I'm surprised to read anyone suggesting that it's ever, truly, been ruled out by the "time war" or anything else. The Doctor is a Timelord, and that Gallifreyan heritage will never be far from the writer's thoughts.







