Along with a new Dev Channel build, 25231, Microsoft also released its latest pair of Beta Channel builds, bumping the version numbers to 22621.875 and 22623.875. As with the Dev Channel build, there’s not much new, although all 22623 Insiders should now have the Task-optimized taskbar. The System Tray improvements that include drag and drop are still rolling out, however.
You can check out the blog post for all the fixes, changes, improvements, and known issues.