The new information was confirmed by reliable unnamed sources familiar to the project who mentioned that Microsoft Executive Vice President Terry Myerson has recently noted the name “Threshold” as the codename on an email to the engineering group at Microsoft. If the company moves forward Windows, Windows Phone, and Xbox One operating systems will be on track to share a more unified programming ecosystem. While we still don’t know what Microsoft will be including on the Threshold update and if in fact this update is the “Blue” successor, we know that this release won’t completely unify all three operating systems bringing a single version of Windows or even merge between Windows RT and Windows Phone OS. SEE ALSO: Windows Store and Windows Phone Store are coming together in 2014 Furthermore, Mary Jo Foley also says that a new update for Windows 8.1 is coming in Spring 2014 and it’s simply called “Update 1”, which will also bring Windows Phone 8.1 (codenamed “Blue”). Finally, for those wondering, the codename “Threshold” comes from the franchise Xbox game, Halo, which was originally released in 2001. Source Zdnet All content on this site is provided with no warranties, express or implied. Use any information at your own risk. Always backup of your device and files before making any changes. Privacy policy info.