diff --git a/modules/ROOT/pages/8.7.0-release-notes.adoc b/modules/ROOT/pages/8.7.0-release-notes.adoc
index 60a84540ef..09fa6e5c4e 100644
--- a/modules/ROOT/pages/8.7.0-release-notes.adoc
+++ b/modules/ROOT/pages/8.7.0-release-notes.adoc
@@ -94,6 +94,13 @@ The following premium plugin updates were released alongside {productname} {rele
 
 // CCFR here.
 
+=== CSS custom property names and color values in the style attribute were lowercased when parsed
+// #TINY-11524
+
+Previously, the {productname} style parser lowercased CSS custom property names (such as `--MyColor`) and `color` and `background-color` values when reading the `style` attribute. This altered case-sensitive values, including CSS custom properties, template placeholders such as `{{FooBar}}`, and hex colors such as `#AABBCC`, so the affected styling sometimes did not render as authored.
+
+In {productname} {release-version}, the style parser preserves the original case of CSS custom property names and `color` and `background-color` values. Standard property names are still lowercased, and other processing, such as RGB-to-hex conversion, shorthand merging, and security filtering, is unchanged. Case-sensitive colors and custom properties now stay exactly as authored.
+
 
 [[security-fixes]]
 == Security fixes