diff --git a/wp-admin/includes/comment.php b/wp-admin/includes/comment.php
index 89022949b1..90d79dd211 100644
--- a/wp-admin/includes/comment.php
+++ b/wp-admin/includes/comment.php
@@ -141,8 +141,8 @@ function get_comment_to_edit( $id ) {
  *
  * @global wpdb $wpdb WordPress database abstraction object.
  *
- * @param int|array $post_id Either a single Post ID or an array of Post IDs
- * @return int|array Either a single Posts pending comments as an int or an array of ints keyed on the Post IDs
+ * @param int|int[] $post_id Either a single Post ID or an array of Post IDs
+ * @return int|int[] Either a single Posts pending comments as an int or an array of ints keyed on the Post IDs
  */
 function get_pending_comments_num( $post_id ) {
 	global $wpdb;
diff --git a/wp-admin/includes/post.php b/wp-admin/includes/post.php
index 8ec615f1c7..96b71d0703 100644
--- a/wp-admin/includes/post.php
+++ b/wp-admin/includes/post.php
@@ -1346,9 +1346,9 @@ function postbox_classes( $box_id, $screen_id ) {
  *
  * @since 2.5.0
  *
- * @param int    $id    Post ID or post object.
- * @param string $title Optional. Title to override the post's current title when generating the post name. Default null.
- * @param string $name  Optional. Name to override the post name. Default null.
+ * @param int|WP_Post $id    Post ID or post object.
+ * @param string      $title Optional. Title to override the post's current title when generating the post name. Default null.
+ * @param string      $name  Optional. Name to override the post name. Default null.
  * @return array {
  *     Array containing the sample permalink with placeholder for the post name, and the post name.
  *
@@ -1596,7 +1596,7 @@ function _wp_post_thumbnail_html( $thumbnail_id = null, $post = null ) {
  *
  * @since 2.5.0
  *
- * @param int $post_id ID of the post to check for editing.
+ * @param int|WP_Post $post_id ID or object of the post to check for editing.
  * @return int|false ID of the user with lock. False if the post does not exist, post is not locked,
  *                   the user with lock does not exist, or the post is locked by current user.
  */
@@ -1634,7 +1634,7 @@ function wp_check_post_lock( $post_id ) {
  *
  * @since 2.5.0
  *
- * @param int $post_id ID of the post being edited.
+ * @param int|WP_Post $post_id ID or object of the post being edited.
  * @return array|false Array of the lock time and user ID. False if the post does not exist, or
  *                     there is no current user.
  */
diff --git a/wp-includes/class-wp-post.php b/wp-includes/class-wp-post.php
index e1c3c3bb6f..4f85f1280c 100644
--- a/wp-includes/class-wp-post.php
+++ b/wp-includes/class-wp-post.php
@@ -352,7 +352,7 @@ final class WP_Post {
 	 * @since 3.5.0
 	 *
 	 * @param string $filter Filter.
-	 * @return array|bool|object|WP_Post
+	 * @return WP_Post
 	 */
 	public function filter( $filter ) {
 		if ( $this->filter === $filter ) {
diff --git a/wp-includes/post-formats.php b/wp-includes/post-formats.php
index 7072266834..c1214da315 100644
--- a/wp-includes/post-formats.php
+++ b/wp-includes/post-formats.php
@@ -11,7 +11,7 @@
  *
  * @since 3.1.0
  *
- * @param int|object|null $post Optional. Post ID or post object. Defaults to the current post in the loop.
+ * @param int|WP_Post|null $post Optional. Post ID or post object. Defaults to the current post in the loop.
  * @return string|false The format if successful. False otherwise.
  */
 function get_post_format( $post = null ) {
diff --git a/wp-includes/post.php b/wp-includes/post.php
index c1a829de91..874d219684 100644
--- a/wp-includes/post.php
+++ b/wp-includes/post.php
@@ -2323,7 +2323,7 @@ function is_sticky( $post_id = 0 ) {
 }
 
 /**
- * Sanitize every post field.
+ * Sanitizes every post field.
  *
  * If the context is 'raw', then the post object or array will get minimal
  * sanitization of the integer fields.
@@ -2332,12 +2332,12 @@ function is_sticky( $post_id = 0 ) {
  *
  * @see sanitize_post_field()
  *
- * @param object|WP_Post|array $post    The Post Object or Array
+ * @param object|WP_Post|array $post    The post object or array
  * @param string               $context Optional. How to sanitize post fields.
  *                                      Accepts 'raw', 'edit', 'db', or 'display'.
  *                                      Default 'display'.
- * @return object|WP_Post|array The now sanitized Post Object or Array (will be the
- *                              same type as $post).
+ * @return object|WP_Post|array The now sanitized post object or array (will be the
+ *                              same type as `$post`).
  */
 function sanitize_post( $post, $context = 'display' ) {
 	if ( is_object( $post ) ) {
diff --git a/wp-includes/version.php b/wp-includes/version.php
index a651726673..62c95474e8 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.6-beta3-49543';
+$wp_version = '5.6-beta3-49544';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.