Index: src/wp-admin/includes/dashboard.php
===================================================================
--- src/wp-admin/includes/dashboard.php	(revision 43542)
+++ src/wp-admin/includes/dashboard.php	(working copy)
@@ -1665,6 +1665,11 @@
 		$url = admin_url( 'admin.php?page=gutenberg' );
 	}
 
+	if ( ! $action ) {
+		$action = __( 'Try Gutenberg' );
+		$url = __( 'https://wordpress.org/gutenberg/' );
+	}
+
 	?>
 	<div class="try-gutenberg-panel-content">
 		<h2><?php _e( 'A new, modern publishing experience is coming soon.' ); ?></h2>