Microsoft announces set of Lumia devices to receive next Windows 10 for phones preview build

Microsoft has announced the next wave of Lumia smartphones that will receive the Windows 10 Technical Preview for phones.

More than two dozen Lumia devices will be part of the next preview build. But during the testing, if any device-specific bug is found, then the device might be pulled out of the list. Also, if any device is not added to the list due to bugs, the next preview build will have it fixed. Following is the list of Lumia phones to join the next preview build.

• Lumia 1020
• Lumia 1320
• Lumia 1520
• Lumia 520
• Lumia 525
• Lumia 526
• Lumia 530
• Lumia 530 Dual Sim
• Lumia 535
• Lumia 620
• Lumia 625
• Lumia 630
• Lumia 630 Dual Sim
• Lumia 635
• Lumia 636
• Lumia 638
• Lumia 720
• Lumia 730
• Lumia 730 Dual SIM
• Lumia 735
• Lumia 810
• Lumia 820
• Lumia 822
• Lumia 830
• Lumia 920
• Lumia 925
• Lumia 928
• Lumia ICON
• Microsoft Lumia 430
• Microsoft Lumia 435
• Microsoft Lumia 435 Dual SIM
• Microsoft Lumia 435 Dual SIM DTV
• Microsoft Lumia 532
• Microsoft Lumia 532 Dual SIM
• Microsoft Lumia 640 Dual SIM
• Microsoft Lumia 535 Dual SIM

The first build of Windows 10 preview for phones released on 12 February was limited to devices such as Lumia 630, 635, 636, 638, 730 and 830.

The reason for having a few select devices from the set of phones is attributed to the system partition sizes configured by the manufacturers. This was necessary to upgrade the phones in-place, explains Microsoft's Gabriel Aul in a blog post.

Besides, in the first preview higher-end Lumia devices such as Lumia 930/Icon and Lumia 1520 were not added since Microsoft was working on a feature called "partition stitching", which will be part of the next preview and allows the company to adjust the OS partition dynamically to create space to install processes to be able to update the OS in-place.

More details on the Windows 10 build for phones for Windows Insiders are available at Microsoft's Windows Blog.