Issue #19375: The site module adding a "site-python" directory to sys.path, if it exists, is now deprecated.
diff --git a/Doc/whatsnew/3.4.rst b/Doc/whatsnew/3.4.rst
index 392af3b..6e261d5 100644
--- a/Doc/whatsnew/3.4.rst
+++ b/Doc/whatsnew/3.4.rst
@@ -685,7 +685,8 @@
 Deprecated features
 -------------------
 
-* No feature deprecations are planned for Python 3.4.
+* The site module adding a "site-python" directory to sys.path, if it
+  exists, is deprecated (:issue:`19375`).
 
 
 Porting to Python 3.4