[The new OS will be released later this year, but free upgrades for existing Windows 10 PCs will not begin until 2022. However, Windows Insiders will be the first to get the latest and (hopefully) greatest version of Microsoft's long-lived OS right now.

Windows 11 build 22000.51, as it is officially called, includes "not all, but many" of the new features revealed last week. While the updated UI is the most outspoken aspect of the new Windows, Insiders also have the opportunity to play with new widgets, multitasking options, and a "beautiful, easy-to-use, and comprehensive" settings menu, test Wi-Fi 6E support (of course, they 6E Office Insiders can also check out a preview build of Windows 11 Office.

As expected, this build has some known issues:

Taskbar:

Settings:

Start

Search

Widgets

Store

Also, "If you are upgrading from Windows 10 to Windows 11 Note also that "some features may be deprecated or removed when upgrading from Windows 10 to Windows 11 or when installing updates to Windows 11. For more information, see here.

If you want to test drive this preview build yourself, you can register for the Windows Insider program here; you'll need to log in with your Microsoft account, and you should know a few important points before jumping in with both feet:

On the other hand, if you want to see what's coming, watch videos, and sign up for the Windows 11 newsletter, Microsoft's Inside Windows 11 website lets you register without commitment.