WSL 2.0 announcement accidentally reveals Windows 10 21H1 preview

Microsoft has started pushing previews of mn_release branches to Insider testers in the Fast Ring channel. The “mn” prefix, fullnamer as Manganese, is the internal code name for the 20H2 service update (Service Pack) scheduled for later this year. After that, the development team will shift its focus to next spring’s 21H1 update. According to a leaked blog post, Microsoft will deliver the Iron version to Fast Ring’s Insider testers starting in June.

WSL 2.0 announcement accidentally reveals Windows 10 21H1 preview

Microsoft is understood to have accidentally leaked information about the preview version of Windows 10 21H1 in the 2.0 announcement of the Windows Linux subsystem (WSL), but the original text was quickly re-edited.

Even so, people with sharp eyes found references to Windows 10 21H1 (Build 20141.1000) in the first-party application update package, indicating that the first preview of 21H1 had arrived or had arrived within weeks of the original plan.

WSL 2.0 announcement accidentally reveals Windows 10 21H1 preview

Although Microsoft Insider’s schedule may change, for now, the Windows 10 21H1 preview update still appears to be on the road.

As the Windows Insider team showed earlier this year, next year we expect to see a major change in the Start menu.

The new Start menu will further incorporate the Fluent design elements to further enhance the overall texture while reducing visual distractions.

WSL 2.0 announcement accidentally reveals Windows 10 21H1 preview

Microsoft also plans to introduce features from Windows 10X for Windows 10, such as allowing testers to use the new Win32 in Windows 10, similar to running Win32 applications in a “sandbox” environment.

Windows Update’s update mechanism is also tweaked to make the upgrade process faster to reduce the long wait for users to update and install.