Add more porting notes.
diff --git a/Doc/whatsnew/3.2.rst b/Doc/whatsnew/3.2.rst
index a3aa4a8..9567016 100644
--- a/Doc/whatsnew/3.2.rst
+++ b/Doc/whatsnew/3.2.rst
@@ -1766,3 +1766,10 @@
with to use bytes instead of text, ``struct.pack('<6sHHBBB', b'GIF87a', x, y)``.
(Discovered by David Beazley and fixed by Victor Stinner; :issue:`10783`.
+
+* The :class:`xml.etree.ElementTree` class now raises an
+ :exc:`xml.etree.ElementTree.ParseError` when a parse fails. Previously it
+ raised a :exc:`xml.parsers.expat.ExpatError`.
+
+* The new, longer :func:`str` value on floats may break doctests which rely on
+ the old output format.