diff --git a/llvm/docs/ReleaseNotes.rst b/llvm/docs/ReleaseNotes.rst
--- a/llvm/docs/ReleaseNotes.rst
+++ b/llvm/docs/ReleaseNotes.rst
@@ -207,6 +207,10 @@
   auto-upgraded to ``@llvm.dbg.value`` with ``DW_OP_deref`` appended to the
   ``DIExpression`` (`D144793 <https://reviews.llvm.org/D144793>`_).
 
+* When a template class annotated with the `[[clang::preferred_name]]` attribute
+  were to appear in a `DW_AT_type`, the type will now be that of the preferred_name
+  instead. This is only enabled when tuned for LLDB at the moment.
+
 Changes to the LLVM tools
 ---------------------------------
 * llvm-lib now supports the /def option for generating a Windows import library from a definition file.