Yes, it’s free! This upgrade offer is for a full version of Windows 10, not a trial. 3GB download required. To take advantage of this free offer, you must upgrade to Windows 10 within one year of availability. Once you have upgraded, you have Windows 10 for free on that device.
Windows 10 Upgrade Offer is valid for qualified Windows 7 and Windows 8.1 devices, including devices that you already own. Some hardware/software requirements apply and feature availability may vary by device and market. The availability of Windows 10 upgrade for Windows Phone 8.1 devices may vary by OEM, mobile operator or carrier. Devices must be connected to the Internet and have Windows Update enabled. Windows 7 SP1 and Windows 8.1 Update required. Some editions are excluded: Windows 7 Enterprise, Windows 8/8.1 Enterprise and Windows RT/RT 8.1.
For more information regarding Windows 10 and this free upgrade, visit the Microsoft website or click on the following link: