diff --git a/IPython/core/release.py b/IPython/core/release.py
index e1ddf16..822b940 100644
--- a/IPython/core/release.py
+++ b/IPython/core/release.py
@@ -22,7 +22,7 @@ name = 'ipython'
 _version_major = 3
 _version_minor = 0
 _version_patch = 0
-_version_extra = 'b1'
+_version_extra = 'dev'
 # _version_extra = 'rc1'
 # _version_extra = ''  # Uncomment this for full releases
 
diff --git a/IPython/html/static/base/js/namespace.js b/IPython/html/static/base/js/namespace.js
index 2fa2d1e..291e113 100644
--- a/IPython/html/static/base/js/namespace.js
+++ b/IPython/html/static/base/js/namespace.js
@@ -4,6 +4,6 @@
 var IPython = IPython || {};
 define([], function(){
     "use strict";
-    IPython.version = "3.0.0-b1";
+    IPython.version = "3.0.0-dev";
     return IPython;
 });