The nee Edge browser is a major change, but tweaks to the Alt-Tab shortcut and the Start menu make the Windows 10 October 2020 Update (or 20H2) worth knowing about.

Microsoft’s Windows 10 October 2020 Update (20H2) update will usher the new Microsoft Edge browser onto millions of PCs, while upgrading the venerable Alt + Tab shortcut with a needed new function. But Microsoft’s designers have turned the once-colorful Start menu into watery gruel with a less-than-impressive visual update.
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https://www.pcworld.com/article/3574951/windows-10-october-2020-update-review-microsoft-nudges-windows-ahead-slightly.html