Windows Phone 8.1

Windows Phone 8.1 is an updated version of Windows Phone 8. It was based on Windows 8.1.

Developer Preview

 * 8.10.12075.209.WPB_EXP_OFFICE(wpbldlab).20130428-1100
 * 8.10.12307.741.WPMAIN(wpbldlab).20140206-1606