diff --git a/package.json b/package.json
index 2fc4f8fa39..84ce72e660 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "WordPress",
-  "version": "4.0.26",
+  "version": "4.0.27",
   "description": "WordPress is web software you can use to create a beautiful website or blog.",
   "repository": {
     "type": "svn",
diff --git a/src/wp-admin/about.php b/src/wp-admin/about.php
index f26b1e7b94..e84614697a 100644
--- a/src/wp-admin/about.php
+++ b/src/wp-admin/about.php
@@ -42,7 +42,27 @@ include( ABSPATH . 'wp-admin/admin-header.php' );
 </h2>
 
 <div class="changelog point-releases">
-	<h3><?php echo _n( 'Maintenance and Security Release', 'Maintenance and Security Releases', 26 ); ?></h3>
+	<h3><?php echo _n( 'Maintenance and Security Release', 'Maintenance and Security Releases', 27 ); ?></h3>
+	<p>
+		<?php
+		printf(
+			/* translators: %s: WordPress version number */
+			__( '<strong>Version %s</strong> addressed some security issues.' ),
+			'4.0.27'
+		);
+		?>
+		<?php
+		printf(
+			/* translators: %s: HelpHub URL */
+			__( 'For more information, see <a href="%s">the release notes</a>.' ),
+			sprintf(
+				/* translators: %s: WordPress version */
+				esc_url( __( 'https://wordpress.org/support/wordpress-version/version-%s/' ) ),
+				sanitize_title( '4.0.27' )
+			)
+		);
+		?>
+	</p>
 	<p>
 		<?php
 		printf(
diff --git a/src/wp-includes/version.php b/src/wp-includes/version.php
index f9673bb670..7cff9e7d2c 100644
--- a/src/wp-includes/version.php
+++ b/src/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.0.26-src';
+$wp_version = '4.0.27-src';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.