https://www.bleepingcomputer.com/news/microsoft/windows-11-is-released-what-you-need-to-know-and-new-features/

Microsoft has released Windows 11 worldwide, and it is now rolling it out via Windows Update on devices with compatible hardware and the latest updates.

In August, Microsoft announced that Windows 11 would be released on October 5th, 2021. While it may seem like they are rolling out the new operating system a day early, Microsoft is using a follow the sun approach to the release.