diff --git a/wp-admin/includes/media.php b/wp-admin/includes/media.php
index 2a4995507f..74b1153df8 100644
--- a/wp-admin/includes/media.php
+++ b/wp-admin/includes/media.php
@@ -3267,7 +3267,14 @@ function edit_form_image_editor( $post ) {
 		'textarea_name' => 'content',
 		'textarea_rows' => 5,
 		'media_buttons' => false,
-		'tinymce'       => false,
+		/**
+		 * Filter the TinyMCE argument for the media description field on the attachment details screen.
+		 *
+		 * @since 6.6.0
+		 *
+		 * @param bool Activate TinyMCE in media description field. Default false.
+		 */
+		'tinymce'       => apply_filters( 'activate_tinymce_for_media_description', false ),
 		'quicktags'     => $quicktags_settings,
 	);
 
diff --git a/wp-includes/version.php b/wp-includes/version.php
index a7928bb0d8..21af687abe 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.6-beta1-58371';
+$wp_version = '6.6-beta1-58372';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.