After some concern, Dona Sarkar confirmed today that while the free upgrade offer will end for PCs, Windows 10 upgrades will continue to be free for all phones that are eligible for the upgrade.
Windows 11 Beta Channel gets Taskbar, File Explorer improvements, and ISOs
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Check your calendars folks because as of today you only have one month left to take advantage of Microsoft's offer and upgrade your devices to Windows 10. After that, a license will cost $119.