Prepare for releasing 0.6.0-incubating
diff --git a/pom.xml b/pom.xml
index 1556534..e026296 100644
--- a/pom.xml
+++ b/pom.xml
@@ -29,7 +29,7 @@
 
     <groupId>org.apache.twill</groupId>
     <artifactId>twill-parent</artifactId>
-    <version>0.6.0-incubating-SNAPSHOT</version>
+    <version>0.6.0-incubating</version>
     <packaging>pom</packaging>
     <name>Apache Twill</name>
     <url>http://twill.incubator.apache.org</url>
diff --git a/twill-api/pom.xml b/twill-api/pom.xml
index f36444e..102c1d0 100644
--- a/twill-api/pom.xml
+++ b/twill-api/pom.xml
@@ -24,7 +24,7 @@
     <parent>
         <groupId>org.apache.twill</groupId>
         <artifactId>twill-parent</artifactId>
-        <version>0.6.0-incubating-SNAPSHOT</version>
+        <version>0.6.0-incubating</version>
     </parent>
 
     <artifactId>twill-api</artifactId>
diff --git a/twill-common/pom.xml b/twill-common/pom.xml
index 0d1f338..cc3030b 100644
--- a/twill-common/pom.xml
+++ b/twill-common/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <artifactId>twill-parent</artifactId>
         <groupId>org.apache.twill</groupId>
-        <version>0.6.0-incubating-SNAPSHOT</version>
+        <version>0.6.0-incubating</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/twill-core/pom.xml b/twill-core/pom.xml
index 075630b..8f1de96 100644
--- a/twill-core/pom.xml
+++ b/twill-core/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <artifactId>twill-parent</artifactId>
         <groupId>org.apache.twill</groupId>
-        <version>0.6.0-incubating-SNAPSHOT</version>
+        <version>0.6.0-incubating</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/twill-discovery-api/pom.xml b/twill-discovery-api/pom.xml
index b07d960..589022d 100644
--- a/twill-discovery-api/pom.xml
+++ b/twill-discovery-api/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <artifactId>twill-parent</artifactId>
         <groupId>org.apache.twill</groupId>
-        <version>0.6.0-incubating-SNAPSHOT</version>
+        <version>0.6.0-incubating</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/twill-discovery-core/pom.xml b/twill-discovery-core/pom.xml
index b29af09..8159250 100644
--- a/twill-discovery-core/pom.xml
+++ b/twill-discovery-core/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <artifactId>twill-parent</artifactId>
         <groupId>org.apache.twill</groupId>
-        <version>0.6.0-incubating-SNAPSHOT</version>
+        <version>0.6.0-incubating</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/twill-examples/echo/pom.xml b/twill-examples/echo/pom.xml
index 51db27b..634a1ac 100644
--- a/twill-examples/echo/pom.xml
+++ b/twill-examples/echo/pom.xml
@@ -25,7 +25,7 @@
     <parent>
         <artifactId>twill-examples</artifactId>
         <groupId>org.apache.twill</groupId>
-        <version>0.6.0-incubating-SNAPSHOT</version>
+        <version>0.6.0-incubating</version>
     </parent>
 
     <name>Apache Twill examples: Echo</name>
diff --git a/twill-examples/pom.xml b/twill-examples/pom.xml
index 30a8bd9..ce968bb 100644
--- a/twill-examples/pom.xml
+++ b/twill-examples/pom.xml
@@ -25,7 +25,7 @@
     <parent>
         <groupId>org.apache.twill</groupId>
         <artifactId>twill-parent</artifactId>
-        <version>0.6.0-incubating-SNAPSHOT</version>
+        <version>0.6.0-incubating</version>
     </parent>
 
     <artifactId>twill-examples</artifactId>
diff --git a/twill-examples/yarn/pom.xml b/twill-examples/yarn/pom.xml
index 6f3c805..17e7a33 100644
--- a/twill-examples/yarn/pom.xml
+++ b/twill-examples/yarn/pom.xml
@@ -24,7 +24,7 @@
     <parent>
         <artifactId>twill-examples</artifactId>
         <groupId>org.apache.twill</groupId>
-        <version>0.6.0-incubating-SNAPSHOT</version>
+        <version>0.6.0-incubating</version>
     </parent>
 
     <name>Apache Twill examples: YARN</name>
diff --git a/twill-ext/pom.xml b/twill-ext/pom.xml
index 976828f..0f1d674 100644
--- a/twill-ext/pom.xml
+++ b/twill-ext/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <artifactId>twill-parent</artifactId>
         <groupId>org.apache.twill</groupId>
-        <version>0.6.0-incubating-SNAPSHOT</version>
+        <version>0.6.0-incubating</version>
     </parent>
 
     <modelVersion>4.0.0</modelVersion>
diff --git a/twill-java8-test/pom.xml b/twill-java8-test/pom.xml
index 9f020f8..8f45842 100644
--- a/twill-java8-test/pom.xml
+++ b/twill-java8-test/pom.xml
@@ -24,7 +24,7 @@
     <parent>
         <groupId>org.apache.twill</groupId>
         <artifactId>twill-parent</artifactId>
-        <version>0.6.0-incubating-SNAPSHOT</version>
+        <version>0.6.0-incubating</version>
     </parent>
 
     <artifactId>twill-java8-test</artifactId>
diff --git a/twill-yarn/pom.xml b/twill-yarn/pom.xml
index 4c6abff..117a505 100644
--- a/twill-yarn/pom.xml
+++ b/twill-yarn/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <artifactId>twill-parent</artifactId>
         <groupId>org.apache.twill</groupId>
-        <version>0.6.0-incubating-SNAPSHOT</version>
+        <version>0.6.0-incubating</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/twill-zookeeper/pom.xml b/twill-zookeeper/pom.xml
index 0d2edda..5a98f95 100644
--- a/twill-zookeeper/pom.xml
+++ b/twill-zookeeper/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <artifactId>twill-parent</artifactId>
         <groupId>org.apache.twill</groupId>
-        <version>0.6.0-incubating-SNAPSHOT</version>
+        <version>0.6.0-incubating</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>