The official BBC site has revealed the Cybermen are to return in the new series, which has been confirmed in the new Radio Times as the mid-series finale A Good Man Goes To War.
The Cybermen have been a staple of the series since their first appearance in William Hartnell's last story, The Tenth Planet, in 1966.
Created by Kit Pedler and Gerry Davis the cyborgs were a regular in the series during the tenure of the Second Doctor appearing in some of his most highly-regarded stories. Appearances followed facing the Fourth Doctor in 1975, the Fifth in 1982 and the Seventh in 1988.
A new race of Cybermen were introduced in the 2006 series story Rise of the Cybermen, with the villains making regular appearances since.
The official site has a history of the Cybermen complete with pictures from behind the scenes of some of the sixties stories.