This is from a recent Microsoft release:
New eligible devices will be offered the upgrade first.
The upgrade will then roll out over time to in-market devices based on intelligence models that consider hardware eligibility, reliability metrics, age of device and other factors that impact the upgrade experience.
We expect all eligible devices to be offered the free upgrade to Windows 11 by mid-2022.
If you have a Windows 10 PC that’s eligible for the upgrade, Windows Update will let you know when it’s available.
End users typically do not have to wait for an offer to upgrade using the upgrade assistant.
Once Windows 11 is released end users may be able to manually upgrade to Windows 11 by performing an in place upgrade repair.
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