diff --git a/wp-admin/includes/meta-boxes.php b/wp-admin/includes/meta-boxes.php
index d6e48544f7..cff73e11f2 100644
--- a/wp-admin/includes/meta-boxes.php
+++ b/wp-admin/includes/meta-boxes.php
@@ -1549,9 +1549,11 @@ function register_and_do_post_meta_boxes( $post ) {
 	 *
 	 * @since 3.0.0
 	 *
-	 * @param string  $post_type Post type of the post.
-	 * @param string  $context   string  Meta box context.
-	 * @param WP_Post $post      Post object.
+	 * @param string                $post_type Post type of the post on Edit Post screen, 'link' on Edit Link screen,
+	 *                                         'dashboard' on Dashboard screen.
+	 * @param string                $context   Meta box context. Possible values include 'normal', 'advanced', 'side'.
+	 * @param WP_Post|object|string $post      Post object on Edit Post screen, link object on Edit Link screen,
+	 *                                         an empty string on Dashboard screen.
 	 */
 	do_action( 'do_meta_boxes', $post_type, 'normal', $post );
 	/** This action is documented in wp-admin/includes/meta-boxes.php */
diff --git a/wp-includes/version.php b/wp-includes/version.php
index f237f06f46..209dcf6017 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.3-alpha-46070';
+$wp_version = '5.3-alpha-46071';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.