There is a strong buzz in the tech world suggesting that after a long wait, Microsoft's Windows 10 Mobile update will finally ship to legacy devices this Thursday, March 17.

The latest report comes from WindowsBlogItalia, which has a history of leaking Microsoft-related news such as this.

It should be kept in mind here that even if the OS does arrive on March 17, most devices still won't get it. The source states that the devices to be promoted on Thursday include: Lumia 535, 636, 638, 640, 640 XL, 830, 930, and 1520.

The list is a bit strange, as it doesn't match the Redmond-based firm's list of which devices will receive the OTA first, which includes: Lumia 430, 435, 532, 535, 540, 640, 640 XL, 735, 830, and 930. These are all Windows Phone 8.1 devices except for the Lumia 1520 which is a Windows Phone 8 device.

Also, if we consider this rumor to be true, it's not likely that all users will receive the upgrade at the same time. Carriers still need to validate the initial Windows 10 Mobile upgrade, even if further software updates will not need it.

All those who just can't wait any longer can get Windows 10 Mobile through the Insider Preview. The official update will not include any device specific firmware, so users can get exactly the same bits through the Release Preview ring.