Microsoft: all Lumias running Windows Phone 8 will be updated to Windows 10
While Windows 10 won’t be out before mid (or late) 2015, Microsoft can already confirm that all current Lumia devices running Windows Phone 8 / 8.1 will be updated to the new version of the OS. This means that even ultra-cheap smartphones like the Lumia 520 and Lumia 530 will run Microsoft’s latest OS next year, which is pretty cool.
We assume that most non-Lumia Windows Phone 8 handsets will also be updated to Windows 10. But that remains to be seen.
Windows 10 is a platform that will unify all Microsoft devices - PCs, laptops, tablets, smartphones, and even wearables. While it will look slightly different, depending on device type, it will be the same OS at its core.