Most importantly, only most modern + powerful devices will be eligible for WIN11.  It is important to check before attempting a WIN10 to WIN11 update.  Early adopters should be technically savvy in case something goes wrong.  WIN11 will rollout slowly into 2022, and WIN10 users should not panic if not eligible as WIN10 will be around for a few years.

Windows 11: Skip the wait to download Microsoft’s new OS with this workaround – CNET

Download Windows 11 (microsoft.com)

Windows 11 has finally arrived. Microsoft’s new operating system started its rollout to eligible devices on Tuesday Oct. 5, and the upgrade is free if you’re already using Windows 10. However, Microsoft is rolling out the OS in phases, which means some people won’t get the prompt to upgrade just yet. An August blog post from Microsoft said the company expects “all eligible devices to be offered the free upgrade to Windows 11 by mid-2022.” But you don’t have to wait: Enter the Windows 11 Installation Assistant.

If you’re not in a rush, however, the Windows 11 update will be pushed to your device at some point in the coming months when Microsoft’s data indicates the upgrade is ready for that device. When the new OS is available to you, the upgrade process will feel similar to a normal Windows 10 update