diff --git a/wp-includes/version.php b/wp-includes/version.php
index c687ab25ed..ee5d58f3a6 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.4-alpha-35158';
+$wp_version = '4.4-alpha-35159';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.
diff --git a/wp-signup.php b/wp-signup.php
index 314421713e..824ba1a7f9 100644
--- a/wp-signup.php
+++ b/wp-signup.php
@@ -40,6 +40,13 @@ if ( !is_main_site() ) {
 // Fix for page title
 $wp_query->is_404 = false;
 
+/**
+ * Fires before the Site Signup page is loaded.
+ *
+ * @since 4.4.0
+ */
+do_action( 'before_signup_header' );
+
 /**
  * Prints styles for front-end Multisite signup pages
  *