The mobile operating system formerly known as “Pocket PC 2000/2002, Pocket PC 2000/2002 Phone Edition, Smartphone 2002, Windows Mobile (2003/5.0) for Pocket PC, Windows Mobile (2003/SE/5.0) for Pocket PC Phone Edition, Windows Mobile (2003/SE/5.0) for Smartphone, Windows Mobile 6[.1/.5] Professional/Classic/Standard” will now be known as Windows Phone Classic.
The last “Classic” nomenclature lasted from Windows Mobile 6 Classic to Windows Mobile 6.1 Classic and denoted the OS for Microsoft’s PDAs. It disappeared after version 6.5.
Windows Phone Classic will co-exist with Windows Phone 7 Series.
Simple.