Microsoft said that the free upgrade will be valid for the first year immediately after the release; if you upgrade during that time, you’ll get Windows 10 for free, for the “lifetime” of your device.
Those on Windows Phone 8.1 will also get the update to Windows 10 on their mobiles.
Terry Myerson, VP of Windows at Microsoft said that the company wanted to make it a “seamless upgrade” for those users when Windows 10 is released.
Check out the new design for the Windows 10 start screen here.
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