Microsoft Lumia 640 XL
Microsoft Lumia 640 XLIBTimes India/Raymond Ronamai

Microsoft Lumia users must be running out of patience waiting for the much-delayed Windows 10 Mobile update. The software was supposed to be rolled out in December, and the list of devices that would initially receive it was announced, but nothing has happened till now.

So when will the new software be rolled out to devices like Lumia 640, Lumia 735, Lumia 830, Lumia 930 and others? Microsoft hasn't announced the software update schedule for its devices, but it could happen as early as next week if Microsoft Lumia Mexico's Facebook post is anything to go by.

Microsoft Lumia Mexico has claimed on its Facebook page (via WMPowerUser) the Windows 10 Mobile update will be seeded to some devices Monday, Feb. 29. However, it didn't reveal the phones that would receive it. 

[Read: Microsoft Lumia 535 gets Windows 10 update]

Interestingly, Lumia device owners won't take unverified reports lightly now, especially after several claims of the software being released to some Lumia devices turned out to be false. It was reported that the Lumia 535 and Lumia 640 had received the update in Latin America and Poland, respectively, but the silence that followed is a clear hint that it didn't happen.

[Read: Windows 10 Mobile update rolled out to Microsoft Lumia 640]

Microsoft had earlier confirmed it would roll out the Windows 10 Mobile update initially to Lumia 430, Lumia 532, Lumia 535, Lumia 540, Lumia 640, Lumia 640 XL, Lumia 735, Lumia 830 and Lumia 930 before reaching out to Windows 8.0-based phones.