release 4.0.1

IPython/core/release.py

@@ -21,7 +21,7 b" name = 'ipython'"
 # version
 _version_major = 4
 _version_minor = 0
-_version_patch = 0
+_version_patch = 1
 # _version_extra = 'dev'
 # _version_extra = 'rc1'
 _version_extra = ''  # Uncomment this for full releases

docs/source/whatsnew/version4.rst

@@ -2,6 +2,17 b''
  4.x Series
 ============
 
+IPython 4.0.1
+=============
+
+Released November, 2015
+
+Fixes for:
+
+- Installation on some systems
+- Compatibility with CPython 3.4.4
+- Compatibility with Qt5
+
 IPython 4.0
 ===========