Issue #19673: Add pathlib to the stdlib as a provisional module (PEP 428).
diff --git a/Doc/whatsnew/3.4.rst b/Doc/whatsnew/3.4.rst
index 5ccbfa4..09d8be8 100644
--- a/Doc/whatsnew/3.4.rst
+++ b/Doc/whatsnew/3.4.rst
@@ -93,6 +93,7 @@
 * :mod:`asyncio`: New provisonal API for asynchronous IO (:pep:`3156`).
 * :mod:`enum`: Support for enumeration types (:pep:`435`).
 * :mod:`ensurepip`: Bootstrapping the pip installer (:pep:`453`).
+* :mod:`pathlib`: Object-oriented filesystem paths (:pep:`428`).
 * :mod:`selectors`: High-level and efficient I/O multiplexing, built upon the
   :mod:`select` module primitives.
 * :mod:`statistics`: A basic numerically stable statistics library (:pep:`450`).
@@ -318,6 +319,23 @@
       implemented by Ethan Furman.
 
 
+pathlib
+-------
+
+The new :mod:`pathlib` module offers classes representing filesystem paths
+with semantics appropriate for different operating systems.  Path classes are
+divided between *pure paths*, which provide purely computational operations
+without I/O, and *concrete paths*, which inherit from pure paths but also
+provide I/O operations.
+
+For Python 3.4, this module is considered a :term:`provisional API`.
+
+.. seealso::
+
+   :pep:`428` - The pathlib module -- object-oriented filesystem paths
+      PEP written and implemented by Antoine Pitrou.
+
+
 selectors
 ---------