diff --git a/website/content/en/releases/15.0R/relnotes.adoc b/website/content/en/releases/15.0R/relnotes.adoc
--- a/website/content/en/releases/15.0R/relnotes.adoc
+++ b/website/content/en/releases/15.0R/relnotes.adoc
@@ -951,6 +951,9 @@
 unchanged.
 gitref:74072e9f16c1[repository=src] {{< sponsored "The FreeBSD Foundation" >}}
 
+The man:udbc[4] driver has been added enabling host side debugging of targets using xHC debug (gitref:d566b6a70bcb[repository=src]).
+{{< sponsored "The FreeBSD Foundation" >}}
+
 The man:ufshci[4] driver has been added, supporting Universal Flash Storage (UFS) host controllers.
 gitref:1349a733cf28[repository=src]  {{< sponsored "Samsung Electronics" >}}