Yesterday, a Microsoft executive indicated that it would not be possible to buy new PCs with Windows 10 pre-installed on July 29, when the OS launches, but said that they would arrive "very soon after" that date. However, the company has since backtracked on that, clarifying that some OEMs will have devices with Windows 10 pre-installed available to buy on launch day.

However, while some of Microsoft's partners will be ready to sell PCs with Windows 10 onboard, Microsoft itself isn't sure when its own devices will come with its new OS pre-installed.

In a statement to Windows Central, the company said that "while you can expect to see Surface devices running Windows 10 on shelves soon, Windows 8.1 devices still provide an exceptional experience and are easily upgraded to Windows 10 for free."...

Read more: Microsoft: Windows 10 will come pre-installed on Surface 3 and Pro 3