Update since comment to reference caching change

src/wp-includes/class-wp-theme-json-resolver.php

@@ -725,6 +725,7 @@ private static function style_variation_has_scope( $variation, $scope ) {
 	 * @since 6.6.0 Added configurable scope parameter to allow filtering
 	 *              theme.json partial files by the scope to which they
 	 *              can be applied e.g. theme vs block etc.
+	 *              Added basic caching for read theme.json partial files.
 	 *
 	 * @param string $scope The scope or type of style variation to retrieve e.g. theme, block etc.
 	 * @return array