On March 13 at the USPTO (U.S. Patent and Trademark Office), Nokia has filed a patent regarding the design of a new smartphone. The registered design by the Finnish resembles other products already on the market, especially the C5-03 and the Lumia 710, but also an Windows Phone appeared long ago in a video (later removed)
Unfortunately we have no other information, but it is possible that Nokia may submit in the coming months a new Windows Phone exploiting this patent right has just been registered.
More information: patft.uspto.gov
Via liveside