Microsoft is giving Windows 10 away for free to Windows 7/8/8.1 users. If one reserves Windows 10 with the new notification in the tray area, what will happen to their Windows 7/8/8.1 license?
Are you really getting Windows 10 for free, as in you upgrade from 7/8/8.1 but you still own the previous version of Windows and Windows 10, or are you really trading your old Windows license for a new one?
Basically, after upgrading to Windows 10 for free from Windows 7, will I still own Windows 7? (Will the product key for 7 still work?)