diff --git a/RELNOTES b/RELNOTES
--- a/RELNOTES
+++ b/RELNOTES
@@ -10,6 +10,12 @@
 
 Changes to this file should not be MFCed.
 
+2b74ff5fceb6:
+    Introduced support for the Intel i6300ESB watchdog timer via the
+    i6300esbwd driver, now included in ichwd.ko.
+    This driver is intended primarily for QEMU users, where it serves as
+    the default and only watchdog timer for x86 virtual machines.
+
 c43cad871720:
 	jemalloc 5.3.0 has landed. See contrib/jemalloc/ChangeLog
 	for the long list of changes.