June 2026 (3.21b) hotfix (#317)

Author: walbourn

.github/skills/release/SKILL.md

@@ -59,7 +59,8 @@ description: Guide for performing the DirectXMath release process. Use this skil
 
 ### Phase 8: Finalize
 
-When fully completed, be sure to update the GitHub release with links to the matching NuGet packages and the VCPKG port.
+20. When fully completed, be sure to update the GitHub release with links to the matching NuGet packages and the VCPKG port.
+21. Contact the Visual C++ compiler team and have them update `src/qa/suites/common/TestAssets.xml` to use the release's commit ids for DirectXMath and the Test Suite to be included in their test coverage.
 
 ## Key Scripts
 

CHANGELOG.md

@@ -6,6 +6,9 @@ Release available for download on [GitHub](https://github.com/microsoft/DirectXM
 
 ## Release History
 
+### June 2026 (3.21b)
+* `constexpr` added to C++20 comparison operators for `XMFLOAT3X3`, `XMFLOAT4X3`, `XMFLOAT3X4`, and `XMFLOAT4X4`
+
 ### May 2026 (3.21)
 * Defaulted C++20 `operator==` and `operator<=>` added for `XMFLOAT3`
 * Fix C++20 comparison operators for `XMFLOAT3X3`, `XMFLOAT4X3`, `XMFLOAT3X4`, and `XMFLOAT4X4`

README.md

@@ -6,7 +6,7 @@ https://github.com/Microsoft/DirectXMath
 
 Copyright (c) Microsoft Corporation.
 
-## May 2026
+## June 2026
 
 This package contains the DirectXMath library, an all inline SIMD C++ linear algebra library for use in games and graphics apps.