https://arstechnica.com/gadgets/2021/09/windows-11-hits-the-release-preview-insider-channel-as-official-release-nears/

Yesterday, Microsoft released a near-final build of Windows 11 to Windows Insiders in the Release Preview channel, which (as the name implies) is generally the last stop for a major new Windows version ahead of its release to the general public. The official release date for Windows 11 is October 5, but Microsoft is planning to roll it out gradually over the next few months to prevent widespread problems.

The build number in the Release Preview channel is 22000.194, the same version released to the Beta channel on September 16.