UPDATE
In an article in the Washington Post on January 27, 2011, Facebook denied it was working on a mobile phone. It stated that the rumor in the City A.M., was wrong in that this phone would not carry the Facebook brand. It said this was just an example of some phone manufacturers using the Facebook API in an "interesting way."
See These Pages: FUTURISM TECH TRENDS SINGULARITY SCIENCE CENSORSHIP SOCIAL NETWORKS eREADERS MOBILE DEVICES
There was however an interesting screen capture done by Engadget and others that showed a call button appearing in some Facebook pages, leading to speculation that the long awaited integration of Skype with Facebook is on its way.
click to enlarge via: Engadget |