https://wccftech.com/windows-10-insider-cumulative-update-build-21296-1010/

Windows 10 Cumulative Update Build 21296.1010 (KB4602812) is now available for Windows Insiders in the Dev Channel. But, don't get too excited since this release doesn't bring any new changes or improvements and is being released to test the servicing pipeline.

For more details, check out this official blog post.