There’s no word yet on when everyone will receive the Windows 10 October 2020 Update, but October (obviously) would be a safe bet.

Microsoft said Friday that it has finalized its next Windows 10 feature release, code-named 20H2, which it has now released to beta testers as the Windows 10 October 2020 Update.

“We believe that Build 19042.508 is the final build and still plan on continuing to improve the overall experience of the October 2020 Update on customers’ PCs as part of our normal servicing cadence,” Microsoft’s Brandon LeBlanc, a senior program manager at Microsoft on the Windows Insider Program team, wrote in a blog post.
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https://www.pcworld.com/article/3575850/windows-10s-october-2020-update-is-ready-to-download.html