Dev Channel is getting Build 25115, and Beta Channel receives Preview Build 22621. Head over to this piece for details on Windows 11 Insider Preview Build 25115. As for Windows 11 Insider Preview Build 22621 for the Beta Channel, it brings a number of fixes, and ISO files for this build are also available for a clean installation.
Windows 11 Insider Preview Build 22621: Fixes and improvements
Windows 11 Build 22621: Known issues
For more details, head over to this blog post by the Windows development team.
