diff --git a/release/doc/en_US.ISO8859-1/relnotes/article.sgml b/release/doc/en_US.ISO8859-1/relnotes/article.sgml
index 5dc580123292..ed7f9def5627 100644
--- a/release/doc/en_US.ISO8859-1/relnotes/article.sgml
+++ b/release/doc/en_US.ISO8859-1/relnotes/article.sgml
@@ -169,6 +169,11 @@
   <sect2 id="kernel">
     <title>Kernel Changes</title>
 
+    <para arch="i386">The &man.ctau.4; driver has been added for Cronyx-Tau
+      synchronous serial adapters. This driver was known for a long time as "ct"
+      in its previous life outside FreeBSD source tree. Note: only driver name
+      has changed. Network interface still has "ct" name.</para>
+
     <para arch="i386">The &man.acpi.toshiba.4; driver has been added
       to use Toshiba's Hardware Control Interface to manipulate
       certain hardware features on Toshiba laptops.</para>
diff --git a/release/doc/en_US.ISO8859-1/relnotes/common/new.sgml b/release/doc/en_US.ISO8859-1/relnotes/common/new.sgml
index 5dc580123292..ed7f9def5627 100644
--- a/release/doc/en_US.ISO8859-1/relnotes/common/new.sgml
+++ b/release/doc/en_US.ISO8859-1/relnotes/common/new.sgml
@@ -169,6 +169,11 @@
   <sect2 id="kernel">
     <title>Kernel Changes</title>
 
+    <para arch="i386">The &man.ctau.4; driver has been added for Cronyx-Tau
+      synchronous serial adapters. This driver was known for a long time as "ct"
+      in its previous life outside FreeBSD source tree. Note: only driver name
+      has changed. Network interface still has "ct" name.</para>
+
     <para arch="i386">The &man.acpi.toshiba.4; driver has been added
       to use Toshiba's Hardware Control Interface to manipulate
       certain hardware features on Toshiba laptops.</para>