Microsoft Corporation (NASDAQ:MSFT)’s next-gen operating system Windows 10 is still under development. The software giant on Thursday released the latest build 9879 of Windows 10 Technical Preview. In the latest build, the company has tweaked user interface, allowing users to hide Task View and Search buttons on the taskbar. It also allows you to pin items to the home area of the File Explorer.

Windows Phone 8 Lumia Devices To Get Windows 10 Upgrade

Lumia users to get a taste of Windows 10

That may not excite Lumia users as much as a confirmation that all Windows Phone 8 Lumia devices will get the forthcoming Windows 10 upgrade. Responding to a user’s question, Microsoft said (via Windows Central) that Windows 10 will be offered to all Windows Phone 8 Lumia phones. The Redmond-based company seems to have learned its lesson, and won’t make the same mistake again.

Windows 10

Microsoft hasn’t revealed details as to when Windows 10 will arrive, though tech experts expect the new OS to arrive in the second-quarter of 2015. Direct confirmation from Microsoft is a big relief for Lumia users. In 2012, the software giant enraged thousands of Windows Phone 7 users when it said that existing devices would get upgraded to Windows Phone 8.

Microsoft intends to do so

The upgrade from Windows Phone 7 to Windows Phone 8 wasn’t possible due to huge differences in the software’s kernel. This time, there isn’t so much difference in the kernel of Windows Phone 8 and Windows 10. Every last Lumia running Windows Phone 8.x will get Microsoft’s latest and greatest software. However, VentureBeat says that it may not be completely true.

VentureBeat contacted Microsoft to confirm or deny the tweet from its support team. The software giant’s stance isn’t “crystal clear” at this point. Microsoft said that it intended to bring Windows 10 upgrade to Lumias running Windows Phone 8. The new OS is still in early development stage, and the company has a huge portfolio of Windows devices. So, the company can’t guarantee that all devices would be upgradeable.

Microsoft shares inched up 0.30% to $49.76 in early trading session Friday.