User blog comment:Pinguinus/Question and Answer Blog/@comment-27270572-20140505185130/@comment-3538016-20140505185341

Damnaer will be involved, acting as a sort of guide to several multiple universes that will be seen.

And--I think I can reveal this without giving away too much-- a new variety of Cybermen will be seen. A new and terrifying variety, which will hunt the Doctor and his companions to the ends of the universe itself.