Insiders who are in the Dev channel are again getting a new Cumulative Update to get the usual testing of servicing pipeline performed. KB5001618 is the update that includes all the fixes and known issues as they were in Build 21337.1000. After installing this release, the version will change to Windows 10 Build 21337.1010.
You are able to install the Windows insider cumulative update by clicking “Check for updates”.
KB5001618 Windows 10 Build 21337.1010 rolling out
The CU has not any changes, improvements, or fixes except the ability to validate the servicing pipeline for the build.
Heads up #WindowsInsiders in the Dev Channel. We’ve released cumulative update 21337.1010 to continue validating our servicing pipleline. If you haven’t checked out the post for Build 21337, be sure you take a look. https://t.co/UNKOTdFp0I#AreYouFlightingYet
— Windows Insider (@windowsinsider) March 19, 2021
Source – Windows blog.