3.5.1

.. bpo: 25709 .. date: 9452 .. nonce: OPX2TS .. release date: 2015-12-06 .. section: Core and Builtins

Fixed problem with in-place string concatenation and utf-8 cache.

..

.. bpo: 25715 .. date: 9451 .. nonce: 3LLYLj .. section: Windows

Python 3.5.1 installer shows wrong upgrade path and incorrect logic for launcher detection.