diff --git a/HISTORY.md b/HISTORY.md
index 0a8abc0..ec8ea7a 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -6,6 +6,10 @@ Release available for download on [GitHub](https://github.com/microsoft/DirectXM
 
 ## Release History
 
+### January 2021 (3.16b)
+* Hot-fixes to resolve build breaks for clang/LLVM and GCC on ARM64
+* ``XM_ALIGNED_DATA`` and ``XM_ALIGNED_STRUCT`` macros updated to use C++17 ``alignas`` when available
+
 ### December 2020 (3.16)
 * Added ``XMVectorLog10`` / ``XMVectorExp10``
 * Added ``XMColorRGBToYUV_UHD`` / ``XMColorYUVToRGB_UHD`` for Rec. 2020 YUV
diff --git a/README.md b/README.md
index c49556c..42bf3d4 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@ https://github.com/Microsoft/DirectXMath
 
 Copyright (c) Microsoft Corporation. All rights reserved.
 
-**December 2020**
+**January 2021**
 
 This package contains the DirectXMath library, an all inline SIMD C++ linear algebra library for use in games and graphics apps.