Ticket #43697: 43697.2.patch

wp-admin/menu.php

@@ -168 +168 @@
 $appearance_cap = current_user_can( 'switch_themes' ) ? 'switch_themes' : 'edit_theme_options';
 
 $menu[60]                     = array( __( 'Appearance' ), $appearance_cap, 'themes.php', '', 'menu-top menu-icon-appearance', 'menu-appearance', 'dashicons-admin-appearance' );
-        $submenu['themes.php'][5] = array( __( 'Themes' ), $appearance_cap, 'themes.php' );
+        $theme_update_count = '';
+        if ( ! is_multisite() && current_user_can( 'update_themes' ) ) {
+                if ( ! isset( $update_data ) ) {
+                        $update_data = wp_get_update_data();
+                }
+                $theme_update_count = "<span class='update-themes count-{$update_data['counts']['themes']}'><span class='theme-count'>" . number_format_i18n( $update_data['counts']['themes'] ) . '</span></span>';
+        }
+        $submenu['themes.php'][5] = array( sprintf( __('Themes %s'), $theme_update_count ), $appearance_cap, 'themes.php' );
 
         $customize_url            = add_query_arg( 'return', urlencode( remove_query_arg( wp_removable_query_args(), wp_unslash( $_SERVER['REQUEST_URI'] ) ) ), 'customize.php' );
         $submenu['themes.php'][6] = array( __( 'Customize' ), 'customize', esc_url( $customize_url ), '', 'hide-if-no-customize' );