Add an explicit mention of a backwards-incompatible fix that importlib implicitly fixed.
diff --git a/Misc/NEWS b/Misc/NEWS
index 4293a1c..54da24d 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -21,6 +21,9 @@
any of the dtoa.c string <-> float conversion functions, on MSVC builds of
Python. This fixes issues when embedding Python in a Delphi app.
+- __import__() now matches PEP 328 and documentation by defaulting 'index' to 0
+ instead of -1 and removing support for negative values.
+
- Issue #2377: Make importlib the implementation of __import__().
- Issue #1559549: ImportError now has 'name' and 'path' attributes that are set