The Cybermen are back and they have evolved to be almost indestructible. Cybermats have become advanced cybermites. There's a super-Cyberman, a Cyber-Planner, seen before but not as a biped, who is more advanced than the Cyber leaders. And the Cyberiad, the collective consciousness of all Cybermen (a little bit like the Dalek's pathweb perhaps, or more obviously, Star Trek's Borg). While the story had some good points, the Cybermen's new ability to upgrade almost instantly to counter new threats, is frustrating and defeats the tension in the story.