diff --git a/source/whats-new.txt b/source/whats-new.txt
index 20c7689..8eb1b83 100644
--- a/source/whats-new.txt
+++ b/source/whats-new.txt
@@ -40,6 +40,12 @@ What's New in 5.5
    learn more about compatible versions of the server, see
    :ref:`scala-compatibility`.
 
+The 5.5 driver release includes the following changes, fixes,
+and features:
+
+- Adds support for the ``connectTimeoutMS`` option when using the
+  default TLS transport layer. 
+
 .. _scala-version-5.4:
 
 What's New in 5.4