The Windows 10, version 21H1 release will not bring updates to the Windows Hardware Compatibility Program and will follow the same guidelines as 20H2. Below are more details with respect to all WHCP-related activities.

Windows Hardware Compatibility Program (WHCP) activities:

• WHCP requirements – No change. Windows 10, version 2004 requirements remain applicable for Windows 10, version 21H1 release.
• Hardware Lab kit – No change. Since WHCP requirements will persist in Windows 10, version 21H1, the HLK will also remain the same. There will not be a new HLK release in Windows 10, version 21H1. As both Windows 10, version 2004 and 21H1 OS can be used for Windows 10, version 2004 qualification, they will be recognized as meeting the Windows 10, version 2004 qualification.
• Errata – No change. All Windows 10, version 2004 errata will continue to be valid for Windows 10, version 20H2 and version 21H1 release.
• HLK playlist – No change. HLK version 2004 playlist can be used for Windows 10, version 2004, version 20H2 and version 21H1 release.
• Driver signature – No change. Drivers that meet all the applicable Windows 10, version 2004 requirements will be digitally signed with the same signature attributes.
• Submission – No change. Windows 10, version 2004, version 20H2 and version 21H1 OS can be used for WHCP submission.
• WHCP qualification – Windows 10, version 2004
• Required OS version – Windows 10, version 2004, version 20H2 or version 21H1
• HLK version – HLK version 2004

Source: https://techcommunity.microsoft.com/...p/ba-p/2138458

Posted By: Brink
16 Feb 2021