diff --git a/lib/cpp/src/thrift/windows/config.h b/lib/cpp/src/thrift/windows/config.h
index fa836e4..d8b814c 100644
--- a/lib/cpp/src/thrift/windows/config.h
+++ b/lib/cpp/src/thrift/windows/config.h
@@ -31,7 +31,7 @@
 #pragma warning(disable: 4996) // Depreciated posix name.
 #pragma warning(disable: 4250) // Inherits via dominance.
 
-#define VERSION "0.9.0-dev"
+#define VERSION "1.0.0-dev"
 #define HAVE_GETTIMEOFDAY 1
 #define HAVE_SYS_STAT_H 1
 
diff --git a/lib/csharp/src/Properties/AssemblyInfo.WP7.cs b/lib/csharp/src/Properties/AssemblyInfo.WP7.cs
index 697d7aa..cbe1763 100644
--- a/lib/csharp/src/Properties/AssemblyInfo.WP7.cs
+++ b/lib/csharp/src/Properties/AssemblyInfo.WP7.cs
@@ -51,6 +51,5 @@
 //
 // You can specify all the values or you can default the Build and Revision Numbers
 // by using the '*' as shown below:
-// [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("0.9.0.0")]
-[assembly: AssemblyFileVersion("0.9.0.0")]
+[assembly: AssemblyVersion("1.0.0.1")]
+[assembly: AssemblyFileVersion("1.0.0.1")]
diff --git a/lib/csharp/src/Properties/AssemblyInfo.cs b/lib/csharp/src/Properties/AssemblyInfo.cs
index 0b39006..dcbe747 100644
--- a/lib/csharp/src/Properties/AssemblyInfo.cs
+++ b/lib/csharp/src/Properties/AssemblyInfo.cs
@@ -51,6 +51,5 @@
 //
 // You can specify all the values or you can default the Build and Revision Numbers
 // by using the '*' as shown below:
-// [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("0.9.0.*")]
-[assembly: AssemblyFileVersion("0.9.0.*")]
+[assembly: AssemblyVersion("1.0.0.1")]
+[assembly: AssemblyFileVersion("1.0.0.1")]
diff --git a/lib/delphi/src/Thrift.pas b/lib/delphi/src/Thrift.pas
index 8b13406..189640a 100644
--- a/lib/delphi/src/Thrift.pas
+++ b/lib/delphi/src/Thrift.pas
@@ -25,7 +25,7 @@
   SysUtils, Thrift.Protocol;
 
 const
-  Version = '0.9.0-dev';
+  Version = '1.0.0-dev';
 
 type
   IProcessor = interface
diff --git a/lib/erl/src/thrift.app.src b/lib/erl/src/thrift.app.src
index 88ca4bc..90ebc62 100644
--- a/lib/erl/src/thrift.app.src
+++ b/lib/erl/src/thrift.app.src
@@ -23,7 +23,7 @@
   {description, "Thrift bindings"},
 
   % The version of the applicaton
-  {vsn, "0.9.0-dev"},
+  {vsn, "1.0.0-dev"},
 
   % All modules used by the application.
   {modules, [
diff --git a/lib/hs/Thrift.cabal b/lib/hs/Thrift.cabal
index cf02e12..6dd9146 100644
--- a/lib/hs/Thrift.cabal
+++ b/lib/hs/Thrift.cabal
@@ -18,7 +18,7 @@
 --
 
 Name:           thrift
-Version:        0.9.0-dev
+Version:        1.0.0-dev
 Cabal-Version:  >= 1.4
 License:        OtherLicense
 Category:       Foreign
diff --git a/lib/java/build.properties b/lib/java/build.properties
index 6e31bb4..a329e77 100644
--- a/lib/java/build.properties
+++ b/lib/java/build.properties
@@ -1,5 +1,6 @@
-thrift.version=0.9.0
+thrift.version=1.0.0
 thrift.groupid=org.apache.thrift
+release=false
 
 # Jar Versions 
 mvn.ant.task.version=2.1.3
diff --git a/lib/js/thrift.js b/lib/js/thrift.js
index 2de5f1a..0bd512b 100644
--- a/lib/js/thrift.js
+++ b/lib/js/thrift.js
@@ -17,7 +17,7 @@
  * under the License.
  */
 var Thrift = {
-    Version: '0.9.0-dev',
+    Version: '1.0.0-dev',
 /*
     Description: 'JavaScript bindings for the Apache Thrift RPC system',
     License: 'http://www.apache.org/licenses/LICENSE-2.0',
diff --git a/lib/nodejs/package.json b/lib/nodejs/package.json
index 386b7df..c2ce1b5 100644
--- a/lib/nodejs/package.json
+++ b/lib/nodejs/package.json
@@ -6,7 +6,7 @@
     { "type" : "svn",
       "url" : "http://svn.apache.org/repos/asf/thrift/trunk/"
     },
-  "version": "0.9.0-dev",
+  "version": "1.0.0-dev",
   "author":
     { "name": "Apache Thrift Developers",
       "email": "dev@thrift.apache.org",
diff --git a/lib/perl/lib/Thrift.pm b/lib/perl/lib/Thrift.pm
index f3ff287..f526803 100644
--- a/lib/perl/lib/Thrift.pm
+++ b/lib/perl/lib/Thrift.pm
@@ -17,7 +17,7 @@
 # under the License.
 #
 
-our $VERSION = '0.9.0-dev';
+our $VERSION = '1.0.0-dev';
 
 require 5.6.0;
 use strict;
diff --git a/lib/py/setup.py b/lib/py/setup.py
index 5e4f923..c196415 100644
--- a/lib/py/setup.py
+++ b/lib/py/setup.py
@@ -66,7 +66,7 @@
         extensions = dict()
         
     setup(name = 'thrift',
-        version = '0.9.0-dev',
+        version = '1.0.0-dev',
         description = 'Python bindings for the Apache Thrift RPC system',
         author = ['Thrift Developers'],
         author_email = ['dev@thrift.apache.org'],