Nexus One@Wiki

The Nexus One is a rumored upcoming smartphone from Google that will run the Android mobile operating system. The device is expected to be manufactured by HTC Corporation for a possible Jan 5, 2010 release (Google have now announced a press event on January 5th at Mountain View which they are calling a Android press gathering.) On December 12, 2009 Google confirmed in a blog post that they have begun internal testing of the device. Google has stated that a "mobile lab device" has been given to its employees but has not yet confirmed if it will eventually be sold to consumers. Wireless phone and data services for the phone are not activated nor billed to Google, it is up to the employees to activate and pay for wireless service on their own.

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Source: Wikipedia - Nexus One