Microsoft has finally made Windows 10 22H2 available to Windows Insiders in the Release Preview Channel, it's an enablement package, therefore it does not contain any new features.
Build 19044.1862 RSS
A new Windows 10 21H2 build has been released to Insiders on the Release Preview channel. The new build, 19044.1862 (KB5015878), brings several changes and improvements like better IOPS and more.