Microsoft says all WP8 system Lumia devices will be upgraded to WIN10

Beijing Time November 14 news, according to Science and technology blog Theverge reports, Microsoft Thursday publicly promised, once Windows 10 released, all running Windows Phone 8 system's Lumia device will be upgraded to mobile version of WIN10.
"We plan to upgrade all WP8 devices to Win10 in the future," Microsoft said in response to a user's question on Twitter. "Microsoft's next-generation operating system, WIN10, is still in its early stages of development, so the software giant will not disclose details of when to launch.
However, the Lumia user should be relieved that history will not repeat itself on them. Microsoft's release of WP8 in 2012 did not allow the upgrade of existing WP7 devices, which offended the Lumia users. Microsoft attributed the reason to the drastic changes in the kernel, but the technical explanation did not appease the user. New Deli Casino
Fortunately, the underlying technology gap between WP8 and Win10 is not so big, so the Lumia users don't have to worry about upgrading this time around.

Microsoft says all WP8 system Lumia devices will be upgraded to WIN10