Yes, that comment by Dorium made me chuckle as well!
Interestingly, towards the end of the credits it says:
Cybermen created by Kit Peddler & Gerry Davis
Silurians created by Malcolm Hulke
Sontarans created by Robert Holmes
Ood and Judoon created by Russell T Davies
... but there were no Ood in that episode.
I wonder if this means that the Ood will appear in the next episode, when they complete this story (or complete some of it hopefully) in the Autumn. I quite like the Ood, although they do tend to speak in somewhat mysterious ways.