diff --git a/wp-admin/includes/ajax-actions.php b/wp-admin/includes/ajax-actions.php
index 968a5a3985..275cc4cea6 100644
--- a/wp-admin/includes/ajax-actions.php
+++ b/wp-admin/includes/ajax-actions.php
@@ -2927,6 +2927,8 @@ function wp_ajax_get_attachment() {
  * Ajax handler for querying attachments.
  *
  * @since 3.5.0
+ * @since 5.8.0 The response returns the attachments under `response.attachments` and
+ *              `response.totalAttachments` holds the total number of attachments found.
  */
 function wp_ajax_query_attachments() {
 	if ( ! current_user_can( 'upload_files' ) ) {
diff --git a/wp-includes/js/media-models.js b/wp-includes/js/media-models.js
index a356b9d05f..c49303de8f 100644
--- a/wp-includes/js/media-models.js
+++ b/wp-includes/js/media-models.js
@@ -876,14 +876,14 @@ var Attachments = Backbone.Collection.extend(/** @lends wp.media.model.Attachmen
 	/**
 	 * Holds the total number of attachments.
 	 *
-	 * @since 5.7.0
+	 * @since 5.8.0
 	 */
 	totalAttachments: 0,
 
 	/**
 	 * Gets the total number of attachments.
 	 *
-	 * @since 5.7.0
+	 * @since 5.8.0
 	 *
 	 * @return {number} The total number of attachments.
 	 */
@@ -894,15 +894,15 @@ var Attachments = Backbone.Collection.extend(/** @lends wp.media.model.Attachmen
 	/**
 	 * A custom Ajax-response parser.
 	 *
-	 * See trac ticket #24753
+	 * See trac ticket #24753.
 	 *
 	 * Called automatically by Backbone whenever a collection's models are returned
 	 * by the server, in fetch. The default implementation is a no-op, simply
 	 * passing through the JSON response. We override this to add attributes to
 	 * the collection items.
 	 *
-	 * Since WordPress 5.5, the response returns the attachments under `response.attachments`
-	 * and `response.totalAttachments` holds the total number of attachments found.
+	 * @since 5.8.0 The response returns the attachments under `response.attachments` and
+	 *              `response.totalAttachments` holds the total number of attachments found.
 	 *
 	 * @param {Object|Array} response The raw response Object/Array.
 	 * @param {Object} xhr
@@ -910,7 +910,7 @@ var Attachments = Backbone.Collection.extend(/** @lends wp.media.model.Attachmen
 	 */
 	parse: function( response, xhr ) {
 		if ( ! _.isArray( response.attachments ) ) {
-			response = [response.attachments];
+			response = [ response.attachments ];
 		}
 
 		this.totalAttachments = parseInt( response.totalAttachments, 10 );
@@ -1226,7 +1226,6 @@ Query = Attachments.extend(/** @lends wp.media.model.Query.prototype */{
 		options.remove = false;
 
 		return this._more = this.fetch( options ).done( function( response ) {
-			// Since WordPress 5.5, the response returns the attachments under `response.attachments`.
 			var attachments = response.attachments;
 
 			if ( _.isEmpty( attachments ) || -1 === this.args.posts_per_page || attachments.length < this.args.posts_per_page ) {
diff --git a/wp-includes/js/media-views.js b/wp-includes/js/media-views.js
index 02822065b6..15e8214362 100644
--- a/wp-includes/js/media-views.js
+++ b/wp-includes/js/media-views.js
@@ -7197,6 +7197,8 @@ Attachments = View.extend(/** @lends wp.media.view.Attachments.prototype */{
 		this.el.id = _.uniqueId('__attachments-view-');
 
 		/**
+		 * @since 5.8.0 Added the `infiniteScrolling` parameter.
+		 *
 		 * @param infiniteScrolling  Whether to enable infinite scrolling or use
 		 *                           the default "load more" button.
 		 * @param refreshSensitivity The time in milliseconds to throttle the scroll
@@ -8464,7 +8466,7 @@ AttachmentsBrowser = View.extend(/** @lends wp.media.view.AttachmentsBrowser.pro
 	/**
 	 * Creates the Attachments wrapper view.
 	 *
-	 * @since 5.7.0
+	 * @since 5.8.0
 	 *
 	 * @return {void}
 	 */
@@ -8514,7 +8516,7 @@ AttachmentsBrowser = View.extend(/** @lends wp.media.view.AttachmentsBrowser.pro
 	/**
 	 * Creates the load more button and attachments counter view.
 	 *
-	 * @since 5.7.0
+	 * @since 5.8.0
 	 *
 	 * @return {void}
 	 */
@@ -8565,7 +8567,7 @@ AttachmentsBrowser = View.extend(/** @lends wp.media.view.AttachmentsBrowser.pro
 	 * collection updates multiple times at the add, remove, and reset events.
 	 * We need it to run only once, after all attachments are added or removed.
 	 *
-	 * @since 5.7.0
+	 * @since 5.8.0
 	 *
 	 * @return {void}
 	 */
@@ -8618,7 +8620,7 @@ AttachmentsBrowser = View.extend(/** @lends wp.media.view.AttachmentsBrowser.pro
 	/**
 	 * Loads more attachments.
 	 *
-	 * @since 5.7.0
+	 * @since 5.8.0
 	 *
 	 * @return {void}
 	 */
@@ -8653,7 +8655,7 @@ AttachmentsBrowser = View.extend(/** @lends wp.media.view.AttachmentsBrowser.pro
 	/**
 	 * Moves focus to the first new added item.	.
 	 *
-	 * @since 5.7.0
+	 * @since 5.8.0
 	 *
 	 * @return {void}
 	 */
diff --git a/wp-includes/media.php b/wp-includes/media.php
index b3dfeb0c6f..19fa2b8b9d 100644
--- a/wp-includes/media.php
+++ b/wp-includes/media.php
@@ -4309,7 +4309,7 @@ function wp_enqueue_media( $args = array() ) {
 	/**
 	 * Filters whether the Media Library grid has infinite scrolling. Default `false`.
 	 *
-	 * @since 5.7.0
+	 * @since 5.8.0
 	 *
 	 * @param bool $value The filtered value, defaults to `false`.
 	 */
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 13055feb9c..95bff56724 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.8-alpha-50830';
+$wp_version = '5.8-alpha-50831';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.