Microsoft breaks its Windows 10 Mobile upgrade promise

Microsoft has screwed up its Windows Phone upgrades once again. While the software maker promised that all Lumia Windows Phone 8 devices would be upgraded to Windows 10, it's breaking that promise. Microsoft started rolling out Windows 10 Mobile to existing Lumia devices this week, and revealed that handsets like the Lumia 920 and Lumia 1020 will be stuck on Windows Phone 8. Here's the full list of officially supported Lumia devices: