Add since comments to functions

src/wp-includes/block-supports/layout.php

@@ -14,6 +14,7 @@
  * also be updated.
  *
  * @since 6.3.0
+ * @since 6.6.0 Updated specificity for compatibility with 0-1-0 global styles specificity.
  * @access private
  *
  * @return array[] Layout definitions.
@@ -222,6 +223,7 @@ function wp_register_layout_support( $block_type ) {
  * @since 5.9.0
  * @since 6.1.0 Added `$block_spacing` param, use style engine to enqueue styles.
  * @since 6.3.0 Added grid layout type.
+ * @since 6.6.0 Removed duplicated selector from layout styles.
  * @access private
  *
  * @param string               $selector                      CSS selector.
@@ -549,6 +551,7 @@ function wp_get_layout_style( $selector, $layout, $has_block_gap_support = false
  * @since 5.8.0
  * @since 6.3.0 Adds compound class to layout wrapper for global spacing styles.
  * @since 6.3.0 Check for layout support via the `layout` key with fallback to `__experimentalLayout`.
+ * @since 6.6.0 Removed duplicate container class from layout styles.
  * @access private
  *
  * @param string $block_content Rendered block content.

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

@@ -1266,6 +1266,7 @@ public function get_stylesheet( $types = array( 'variables', 'styles', 'presets'
 	 * Processes the CSS, to apply nesting.
 	 *
 	 * @since 6.2.0
+	 * @since 6.6.0 Enforced 0-1-0 specificity for block custom CSS selectors.
 	 *
 	 * @param string $css      The CSS to process.
 	 * @param string $selector The selector to nest.
@@ -1414,6 +1415,7 @@ protected function get_block_classes( $style_nodes ) {
 	 * @since 6.3.0 Reduced specificity for layout margin rules.
 	 * @since 6.5.1 Only output rules referencing content and wide sizes when values exist.
 	 * @since 6.5.3 Add types parameter to check if only base layout styles are needed.
+	 * @since 6.6.0 Updated layout style specificity to be compatible with overall 0-1-0 specificity in global styles.
 	 *
 	 * @param array $block_metadata Metadata about the block to get styles for.
 	 * @param array $types          Optional. Types of styles to output. If empty, all styles will be output.
@@ -2506,6 +2508,7 @@ private static function get_block_nodes( $theme_json ) {
 	 *
 	 * @since 6.1.0
 	 * @since 6.6.0 Setting a min-height of HTML when root styles have a background gradient or image.
+	 *              Updated general global styles specificity to 0-1-0.
 	 *
 	 * @param array $block_metadata Metadata about the block to get styles for.
 	 *
@@ -2688,6 +2691,7 @@ static function ( $pseudo_selector ) use ( $selector ) {
 	 *
 	 * @since 6.1.0
 	 * @since 6.6.0 Use `ROOT_CSS_PROPERTIES_SELECTOR` for CSS custom properties and improved consistency of root padding rules.
+	 *              Updated specificity of body margin reset and first/last child selectors.
 	 *
 	 * @param string $selector The root node selector.
 	 * @param array  $block_metadata The metadata for the root block.