windowscentral[.]com/windows-11-preview-now-available-insider-beta-channel
Microsoft's Insider program initially provided a preview of the next version of Windows 10, with what's now the Dev channel getting the newest, untried bits, and what's now the Beta channel getting a more stable, but slightly older version. That changed, with the Dev channel receiving basically anything Microsoft wanted to test, much of which was never going to be deployed in Windows 10 -- Windows 11 was the first actual Windows version in quite some time. Now that Win11 in available in the Beta channel, it's expected that the Dev channel will return to its previous pattern, testing whatever. Anyone enrolled in the Dev channel to try out Win11 is now advised to switch to the Beta channel.