Ever since I started working with Microsoft technologies back in the early 1990's, I quickly noticed that Redmond suffers from severe name-confusion issues. It's baffling how Microsoft Marketing often insists on using fully-descriptive-but-boring names for their products (e.g. Microsoft Internet Information Server) instead of cool names (e.g. Silverlight). And then they also change names on us all the time (e.g. "Windows Server Compute Cluster Edition" to "Windows HPC Server"). Microsoft's mobile world is no exception.
Keep reading on my blog at http://community.infragistics.com/blogs/nick-landry/archive/2012/02/10/confusing-marketing-it-s-called-windows-phone-folks.aspx