diff --git a/IPython/core/release.py b/IPython/core/release.py
index 4480ad0..955b6d8 100644
--- a/IPython/core/release.py
+++ b/IPython/core/release.py
@@ -23,7 +23,7 @@ _version_major = 6
 _version_minor = 0
 _version_patch = 0
 _version_extra = '.dev'
-# _version_extra = 'rc1'
+_version_extra = 'rc1'
 # _version_extra = ''  # Uncomment this for full releases
 
 # Construct full version string from these.
diff --git a/docs/source/whatsnew/development.rst b/docs/source/whatsnew/version6.rst
similarity index 95%
rename from docs/source/whatsnew/development.rst
rename to docs/source/whatsnew/version6.rst
index ec150e7..3d0cf48 100644
--- a/docs/source/whatsnew/development.rst
+++ b/docs/source/whatsnew/version6.rst
@@ -1,15 +1,3 @@
-=====================
- Development version
-=====================
-
-This document describes in-flight development work.
-
-.. warning::
-
-    Please do not edit this file by hand (doing so will likely cause merge
-    conflicts for other Pull Requests). Instead, create a new file in the
-    `docs/source/whatsnew/pr` folder
-
 IPython 6.0
 ===========
 
diff --git a/tools/toollib.py b/tools/toollib.py
index f5a117d..fd160c5 100644
--- a/tools/toollib.py
+++ b/tools/toollib.py
@@ -20,7 +20,7 @@ archive = '%s:%s' % (archive_user, archive_dir)
 sdists = './setup.py sdist --formats=gztar'
 # Binary dists
 def buildwheels():
-    sh('python3 setupegg.py bdist_wheel' % py)
+    sh('python3 setupegg.py bdist_wheel')
 
 # Utility functions
 def sh(cmd):