I don't know....I mean, I'm very tempted to think that there is a connection between what was said/happened at the end of Torchwood series one and what we've just seen in this episode (with the Face of Boe) but maybe I'm thinking too much about this
This could be interesting given that this is David Tennant last series as the Doctor. David's going out on a high!
Oh and Doctor Who without the Daleks or the Cybermen just isn't Doctor Who (I swear the Daleks have be brought back to life more times than Optimus Prime
)