Techradar posted a story that the chief of Windows Phone has stated that a Surface Phone is not currently in the pipeline

At least not right now. Speaking at the second day of Dive Into Mobile in New York, head of Windows Phone Terry Myerson dismissed rumours that there would be a Microsoft-made Surface-branded version of the Windows Phone any time soon. It would have to be something where Nokia or HTC was not providing the consumer experience we think is possible with our platform, he said.

  Microsoft: We have no plans to make a Surface Phone