diff --git a/build.properties b/build.properties
index 5f5f4b6ebf2c..1c5c29583502 100644
--- a/build.properties
+++ b/build.properties
@@ -5,7 +5,7 @@ spring.osgi.range="${spring.osgi.range.nq}"
 aj.osgi.range="[1.5.4, 2.0.0)"
 
 #
-release.type=integration
+#release.type=integration
 natural.name=spring-framework
 project.name=Spring Framework
 project.key=SPR
@@ -22,8 +22,8 @@ compiler.args=-enableJavadoc -warn:none
 #build.stamp=RELEASE
 
 # For when releasing milestones
-#release.type=milestone
-#build.stamp=M1
+release.type=milestone
+build.stamp=M1
 
 # For development in trunk
 #release.type=integration
diff --git a/org.springframework.aop/pom.xml b/org.springframework.aop/pom.xml
index 98c0cf409d47..f99bf1339664 100644
--- a/org.springframework.aop/pom.xml
+++ b/org.springframework.aop/pom.xml
@@ -4,12 +4,12 @@
   <groupId>org.springframework</groupId>
   <artifactId>spring-aop</artifactId>
   <packaging>jar</packaging>
-  <version>3.1.0.BUILD-SNAPSHOT</version>
+  <version>3.1.0.M1</version>
   <parent>
     <groupId>org.springframework</groupId>
     <artifactId>spring-parent</artifactId>
     <relativePath>../org.springframework.spring-parent</relativePath>
-    <version>3.1.0.BUILD-SNAPSHOT</version>
+    <version>3.1.0.M1</version>
   </parent>
 
   <dependencies>
diff --git a/org.springframework.asm/pom.xml b/org.springframework.asm/pom.xml
index 5b66af1639b3..9a2fd4033f5b 100644
--- a/org.springframework.asm/pom.xml
+++ b/org.springframework.asm/pom.xml
@@ -4,12 +4,12 @@
   <groupId>org.springframework</groupId>
   <artifactId>spring-asm</artifactId>
   <packaging>jar</packaging>
-  <version>3.1.0.BUILD-SNAPSHOT</version>
+  <version>3.1.0.M1</version>
   <parent>
     <groupId>org.springframework</groupId>
     <artifactId>spring-parent</artifactId>
     <relativePath>../org.springframework.spring-parent</relativePath>
-    <version>3.1.0.BUILD-SNAPSHOT</version>
+    <version>3.1.0.M1</version>
   </parent>
 
 
diff --git a/org.springframework.aspects/pom.xml b/org.springframework.aspects/pom.xml
index d5fa43e4e9c3..9eca48addb0d 100644
--- a/org.springframework.aspects/pom.xml
+++ b/org.springframework.aspects/pom.xml
@@ -4,12 +4,12 @@
   <groupId>org.springframework</groupId>
   <artifactId>spring-aspects</artifactId>
   <packaging>jar</packaging>
-  <version>3.1.0.BUILD-SNAPSHOT</version>
+  <version>3.1.0.M1</version>
   <parent>
     <groupId>org.springframework</groupId>
     <artifactId>spring-parent</artifactId>
     <relativePath>../org.springframework.spring-parent</relativePath>
-    <version>3.1.0.BUILD-SNAPSHOT</version>
+    <version>3.1.0.M1</version>
   </parent>
 
   <dependencies>
diff --git a/org.springframework.beans/pom.xml b/org.springframework.beans/pom.xml
index 67ae140c8272..dedb50414097 100644
--- a/org.springframework.beans/pom.xml
+++ b/org.springframework.beans/pom.xml
@@ -4,12 +4,12 @@
   <groupId>org.springframework</groupId>
   <artifactId>spring-beans</artifactId>
   <packaging>jar</packaging>
-  <version>3.1.0.BUILD-SNAPSHOT</version>
+  <version>3.1.0.M1</version>
   <parent>
     <groupId>org.springframework</groupId>
     <artifactId>spring-parent</artifactId>
     <relativePath>../org.springframework.spring-parent</relativePath>
-    <version>3.1.0.BUILD-SNAPSHOT</version>
+    <version>3.1.0.M1</version>
   </parent>
 
   <dependencies>
diff --git a/org.springframework.context.support/pom.xml b/org.springframework.context.support/pom.xml
index 9a4eb62d39d8..53566ef4ff88 100644
--- a/org.springframework.context.support/pom.xml
+++ b/org.springframework.context.support/pom.xml
@@ -4,12 +4,12 @@
   <groupId>org.springframework</groupId>
   <artifactId>spring-context-support</artifactId>
   <packaging>jar</packaging>
-  <version>3.1.0.BUILD-SNAPSHOT</version>
+  <version>3.1.0.M1</version>
   <parent>
     <groupId>org.springframework</groupId>
     <artifactId>spring-parent</artifactId>
     <relativePath>../org.springframework.spring-parent</relativePath>
-    <version>3.1.0.BUILD-SNAPSHOT</version>
+    <version>3.1.0.M1</version>
   </parent>
 
 
diff --git a/org.springframework.context/pom.xml b/org.springframework.context/pom.xml
index 84d7720bf298..aae2448fe908 100644
--- a/org.springframework.context/pom.xml
+++ b/org.springframework.context/pom.xml
@@ -6,12 +6,12 @@
 	<groupId>org.springframework</groupId>
 	<artifactId>spring-context</artifactId>
 	<packaging>jar</packaging>
-	<version>3.1.0.BUILD-SNAPSHOT</version>
+	<version>3.1.0.M1</version>
 	<parent>
 		<groupId>org.springframework</groupId>
 		<artifactId>spring-parent</artifactId>
 		<relativePath>../org.springframework.spring-parent</relativePath>
-		<version>3.1.0.BUILD-SNAPSHOT</version>
+		<version>3.1.0.M1</version>
 	</parent>
 
 	<dependencies>
diff --git a/org.springframework.core/pom.xml b/org.springframework.core/pom.xml
index 4d5e6b2dbda3..eb5e2df64885 100644
--- a/org.springframework.core/pom.xml
+++ b/org.springframework.core/pom.xml
@@ -6,12 +6,12 @@
 	<groupId>org.springframework</groupId>
 	<artifactId>spring-core</artifactId>
 	<packaging>jar</packaging>
-	<version>3.1.0.BUILD-SNAPSHOT</version>
+	<version>3.1.0.M1</version>
 	<parent>
 		<groupId>org.springframework</groupId>
 		<artifactId>spring-parent</artifactId>
 		<relativePath>../org.springframework.spring-parent</relativePath>
-		<version>3.1.0.BUILD-SNAPSHOT</version>
+		<version>3.1.0.M1</version>
 	</parent>
 
 	<dependencies>
diff --git a/org.springframework.expression/pom.xml b/org.springframework.expression/pom.xml
index 1ac99341d029..0eec2417ebaa 100644
--- a/org.springframework.expression/pom.xml
+++ b/org.springframework.expression/pom.xml
@@ -4,12 +4,12 @@
   <groupId>org.springframework</groupId>
   <artifactId>spring-expression</artifactId>
   <packaging>jar</packaging>
-  <version>3.1.0.BUILD-SNAPSHOT</version>
+  <version>3.1.0.M1</version>
   <parent>
     <groupId>org.springframework</groupId>
     <artifactId>spring-parent</artifactId>
     <relativePath>../org.springframework.spring-parent</relativePath>
-    <version>3.1.0.BUILD-SNAPSHOT</version>
+    <version>3.1.0.M1</version>
   </parent>
 
   <dependencies>
diff --git a/org.springframework.instrument.tomcat/pom.xml b/org.springframework.instrument.tomcat/pom.xml
index bf94631dfbc0..d11047b83068 100644
--- a/org.springframework.instrument.tomcat/pom.xml
+++ b/org.springframework.instrument.tomcat/pom.xml
@@ -4,12 +4,12 @@
   <groupId>org.springframework</groupId>
   <artifactId>spring-instrument-tomcat</artifactId>
   <packaging>jar</packaging>
-  <version>3.1.0.BUILD-SNAPSHOT</version>
+  <version>3.1.0.M1</version>
   <parent>
     <groupId>org.springframework</groupId>
     <artifactId>spring-parent</artifactId>
     <relativePath>../org.springframework.spring-parent</relativePath>
-    <version>3.1.0.BUILD-SNAPSHOT</version>
+    <version>3.1.0.M1</version>
   </parent>
 
   <dependencies>
diff --git a/org.springframework.instrument/pom.xml b/org.springframework.instrument/pom.xml
index c7b4d47fe8c4..df25be48e894 100644
--- a/org.springframework.instrument/pom.xml
+++ b/org.springframework.instrument/pom.xml
@@ -4,12 +4,12 @@
   <groupId>org.springframework</groupId>
   <artifactId>spring-instrument</artifactId>
   <packaging>jar</packaging>
-  <version>3.1.0.BUILD-SNAPSHOT</version>
+  <version>3.1.0.M1</version>
   <parent>
     <groupId>org.springframework</groupId>
     <artifactId>spring-parent</artifactId>
     <relativePath>../org.springframework.spring-parent</relativePath>
-    <version>3.1.0.BUILD-SNAPSHOT</version>
+    <version>3.1.0.M1</version>
   </parent>
 
 </project>
diff --git a/org.springframework.integration-tests/pom.xml b/org.springframework.integration-tests/pom.xml
index 48316c16b676..2975033df441 100644
--- a/org.springframework.integration-tests/pom.xml
+++ b/org.springframework.integration-tests/pom.xml
@@ -4,12 +4,12 @@
   <groupId>org.springframework</groupId>
   <artifactId>spring-integration-tests</artifactId>
   <packaging>jar</packaging>
-  <version>3.1.0.BUILD-SNAPSHOT</version>
+  <version>3.1.0.M1</version>
 	<parent>
 		<groupId>org.springframework</groupId>
 		<artifactId>spring-parent</artifactId>
 		<relativePath>../org.springframework.spring-parent</relativePath>
-		<version>3.1.0.BUILD-SNAPSHOT</version>
+		<version>3.1.0.M1</version>
 	</parent>
   <dependencies>
     <dependency>
diff --git a/org.springframework.jdbc/pom.xml b/org.springframework.jdbc/pom.xml
index d27a822aa826..a250f46e88d4 100644
--- a/org.springframework.jdbc/pom.xml
+++ b/org.springframework.jdbc/pom.xml
@@ -4,12 +4,12 @@
   <groupId>org.springframework</groupId>
   <artifactId>spring-jdbc</artifactId>
   <packaging>jar</packaging>
-  <version>3.1.0.BUILD-SNAPSHOT</version>
+  <version>3.1.0.M1</version>
   <parent>
     <groupId>org.springframework</groupId>
     <artifactId>spring-parent</artifactId>
     <relativePath>../org.springframework.spring-parent</relativePath>
-    <version>3.1.0.BUILD-SNAPSHOT</version>
+    <version>3.1.0.M1</version>
   </parent>
   <dependencies>
     <dependency>
diff --git a/org.springframework.jms/pom.xml b/org.springframework.jms/pom.xml
index 7bbc1d7bca27..35ad2c8df032 100644
--- a/org.springframework.jms/pom.xml
+++ b/org.springframework.jms/pom.xml
@@ -4,12 +4,12 @@
   <groupId>org.springframework</groupId>
   <artifactId>spring-jms</artifactId>
   <packaging>jar</packaging>
-  <version>3.1.0.BUILD-SNAPSHOT</version>
+  <version>3.1.0.M1</version>
   <parent>
     <groupId>org.springframework</groupId>
     <artifactId>spring-parent</artifactId>
     <relativePath>../org.springframework.spring-parent</relativePath>
-    <version>3.1.0.BUILD-SNAPSHOT</version>
+    <version>3.1.0.M1</version>
   </parent>
 
   <dependencies>
diff --git a/org.springframework.orm/pom.xml b/org.springframework.orm/pom.xml
index 542321ea1736..424da51bae79 100644
--- a/org.springframework.orm/pom.xml
+++ b/org.springframework.orm/pom.xml
@@ -6,12 +6,12 @@
 	<groupId>org.springframework</groupId>
 	<artifactId>spring-orm</artifactId>
 	<packaging>jar</packaging>
-	<version>3.1.0.BUILD-SNAPSHOT</version>
+	<version>3.1.0.M1</version>
 	<parent>
 		<groupId>org.springframework</groupId>
 		<artifactId>spring-parent</artifactId>
 		<relativePath>../org.springframework.spring-parent</relativePath>
-		<version>3.1.0.BUILD-SNAPSHOT</version>
+		<version>3.1.0.M1</version>
 	</parent>
 	<dependencies>
 		<dependency>
diff --git a/org.springframework.oxm/pom.xml b/org.springframework.oxm/pom.xml
index 701b405249bc..db6d887c0d2f 100644
--- a/org.springframework.oxm/pom.xml
+++ b/org.springframework.oxm/pom.xml
@@ -6,12 +6,12 @@
 	<groupId>org.springframework</groupId>
 	<artifactId>spring-oxm</artifactId>
 	<packaging>jar</packaging>
-	<version>3.1.0.BUILD-SNAPSHOT</version>
+	<version>3.1.0.M1</version>
 	<parent>
 		<groupId>org.springframework</groupId>
 		<artifactId>spring-parent</artifactId>
 		<relativePath>../org.springframework.spring-parent</relativePath>
-		<version>3.1.0.BUILD-SNAPSHOT</version>
+		<version>3.1.0.M1</version>
 	</parent>
 
 	<dependencies>
diff --git a/org.springframework.spring-library/pom.xml b/org.springframework.spring-library/pom.xml
index 37e9857c3fa6..0672c133d9e7 100644
--- a/org.springframework.spring-library/pom.xml
+++ b/org.springframework.spring-library/pom.xml
@@ -14,7 +14,7 @@
   <groupId>org.springframework</groupId>
   <artifactId>spring-library</artifactId>
   <packaging>libd</packaging>
-  <version>3.1.0.BUILD-SNAPSHOT</version>
+  <version>3.1.0.M1</version>
   <name>Spring Framework</name>
   <description>Spring is a layered Java/J2EE application platform, based on code published in Expert
   One-on-One J2EE Design and Development by Rod Johnson (Wrox, 2002). </description>
diff --git a/org.springframework.spring-parent/pom.xml b/org.springframework.spring-parent/pom.xml
index ee4be80e53bc..6da026f99aa0 100644
--- a/org.springframework.spring-parent/pom.xml
+++ b/org.springframework.spring-parent/pom.xml
@@ -14,7 +14,7 @@
   <artifactId>spring-parent</artifactId>
   <packaging>pom</packaging>
   <name>Spring Framework - Parent</name>
-  <version>3.1.0.BUILD-SNAPSHOT</version>
+  <version>3.1.0.M1</version>
   <description>Spring Framework Parent</description>
   <scm>
     <url>https://fisheye.springframework.org/browse/spring-framework</url>
diff --git a/org.springframework.test/pom.xml b/org.springframework.test/pom.xml
index 79787997adfc..dc7daaced0a5 100644
--- a/org.springframework.test/pom.xml
+++ b/org.springframework.test/pom.xml
@@ -4,12 +4,12 @@
   <groupId>org.springframework</groupId>
   <artifactId>spring-test</artifactId>
   <packaging>jar</packaging>
-  <version>3.1.0.BUILD-SNAPSHOT</version>
+  <version>3.1.0.M1</version>
   <parent>
     <groupId>org.springframework</groupId>
     <artifactId>spring-parent</artifactId>
     <relativePath>../org.springframework.spring-parent</relativePath>
-    <version>3.1.0.BUILD-SNAPSHOT</version>
+    <version>3.1.0.M1</version>
   </parent>
 
   <dependencies>
diff --git a/org.springframework.transaction/pom.xml b/org.springframework.transaction/pom.xml
index 9fed17f6faae..1c7f8bb76c94 100644
--- a/org.springframework.transaction/pom.xml
+++ b/org.springframework.transaction/pom.xml
@@ -4,12 +4,12 @@
   <groupId>org.springframework</groupId>
   <artifactId>spring-tx</artifactId>
   <packaging>jar</packaging>
-  <version>3.1.0.BUILD-SNAPSHOT</version>
+  <version>3.1.0.M1</version>
   <parent>
     <groupId>org.springframework</groupId>
     <artifactId>spring-parent</artifactId>
     <relativePath>../org.springframework.spring-parent</relativePath>
-    <version>3.1.0.BUILD-SNAPSHOT</version>
+    <version>3.1.0.M1</version>
   </parent>
 
   <dependencies>
diff --git a/org.springframework.web.portlet/pom.xml b/org.springframework.web.portlet/pom.xml
index ac6678b3f4f2..803a9a07a3ab 100644
--- a/org.springframework.web.portlet/pom.xml
+++ b/org.springframework.web.portlet/pom.xml
@@ -4,12 +4,12 @@
   <groupId>org.springframework</groupId>
   <artifactId>spring-webmvc-portlet</artifactId>
   <packaging>jar</packaging>
-  <version>3.1.0.BUILD-SNAPSHOT</version>
+  <version>3.1.0.M1</version>
   <parent>
     <groupId>org.springframework</groupId>
     <artifactId>spring-parent</artifactId>
     <relativePath>../org.springframework.spring-parent</relativePath>
-    <version>3.1.0.BUILD-SNAPSHOT</version>
+    <version>3.1.0.M1</version>
   </parent>
 
   <dependencies>
diff --git a/org.springframework.web.servlet/pom.xml b/org.springframework.web.servlet/pom.xml
index 44a99a6f8af1..11a4255c85c0 100644
--- a/org.springframework.web.servlet/pom.xml
+++ b/org.springframework.web.servlet/pom.xml
@@ -6,12 +6,12 @@
 	<groupId>org.springframework</groupId>
 	<artifactId>spring-webmvc</artifactId>
 	<packaging>jar</packaging>
-	<version>3.1.0.BUILD-SNAPSHOT</version>
+	<version>3.1.0.M1</version>
 	<parent>
 		<groupId>org.springframework</groupId>
 		<artifactId>spring-parent</artifactId>
 		<relativePath>../org.springframework.spring-parent</relativePath>
-		<version>3.1.0.BUILD-SNAPSHOT</version>
+		<version>3.1.0.M1</version>
 	</parent>
 
 	<profiles>
diff --git a/org.springframework.web.struts/pom.xml b/org.springframework.web.struts/pom.xml
index a82f148510ec..f05f6e25ca7a 100644
--- a/org.springframework.web.struts/pom.xml
+++ b/org.springframework.web.struts/pom.xml
@@ -6,12 +6,12 @@
   <groupId>org.springframework</groupId>
   <artifactId>spring-struts</artifactId>
   <packaging>jar</packaging>
-  <version>3.1.0.BUILD-SNAPSHOT</version>
+  <version>3.1.0.M1</version>
   <parent>
     <groupId>org.springframework</groupId>
     <artifactId>spring-parent</artifactId>
     <relativePath>../org.springframework.spring-parent</relativePath>
-    <version>3.1.0.BUILD-SNAPSHOT</version>
+    <version>3.1.0.M1</version>
   </parent>
   <dependencies>
     <dependency>
diff --git a/org.springframework.web/pom.xml b/org.springframework.web/pom.xml
index ca1fc7329e65..5d869dcfde22 100644
--- a/org.springframework.web/pom.xml
+++ b/org.springframework.web/pom.xml
@@ -6,12 +6,12 @@
 	<groupId>org.springframework</groupId>
 	<artifactId>spring-web</artifactId>
 	<packaging>jar</packaging>
-	<version>3.1.0.BUILD-SNAPSHOT</version>
+	<version>3.1.0.M1</version>
 	<parent>
 		<groupId>org.springframework</groupId>
 		<artifactId>spring-parent</artifactId>
 		<relativePath>../org.springframework.spring-parent</relativePath>
-		<version>3.1.0.BUILD-SNAPSHOT</version>
+		<version>3.1.0.M1</version>
 	</parent>
 
 	<dependencies>