diff --git a/hadoop-common-project/hadoop-common/CHANGES.txt b/hadoop-common-project/hadoop-common/CHANGES.txt
index d48479a9dc..32f69055af 100644
--- a/hadoop-common-project/hadoop-common/CHANGES.txt
+++ b/hadoop-common-project/hadoop-common/CHANGES.txt
@@ -2294,6 +2294,18 @@ Release 2.7.0 - 2015-04-20
     HADOOP-11837. AuthenticationFilter should destroy SignerSecretProvider in
     Tomcat deployments. (Bowen Zhang via wheat9)
 
+Release 2.6.4 - UNRELEASED
+
+  INCOMPATIBLE CHANGES
+
+  NEW FEATURES
+
+  IMPROVEMENTS
+
+  OPTIMIZATIONS
+
+  BUG FIXES
+
 Release 2.6.3 - UNRELEASED
 
   INCOMPATIBLE CHANGES
diff --git a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
index bf77e73fe4..9e37b2db10 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
+++ b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
@@ -3542,6 +3542,18 @@ Release 2.7.0 - 2015-04-20
       HDFS-7700. Document quota support for storage types. (Xiaoyu Yao via
       Arpit Agarwal)
 
+Release 2.6.4 - UNRELEASED
+
+  INCOMPATIBLE CHANGES
+
+  NEW FEATURES
+
+  IMPROVEMENTS
+
+  OPTIMIZATIONS
+
+  BUG FIXES
+
 Release 2.6.3 - UNRELEASED
 
   INCOMPATIBLE CHANGES
diff --git a/hadoop-mapreduce-project/CHANGES.txt b/hadoop-mapreduce-project/CHANGES.txt
index 2a995c7933..c4d2e484a3 100644
--- a/hadoop-mapreduce-project/CHANGES.txt
+++ b/hadoop-mapreduce-project/CHANGES.txt
@@ -964,6 +964,18 @@ Release 2.7.0 - 2015-04-20
     MAPREDUCE-6285. ClientServiceDelegate should not retry upon
     AuthenticationException. (Jonathan Eagles via ozawa)
 
+Release 2.6.4 - UNRELEASED
+
+  INCOMPATIBLE CHANGES
+
+  NEW FEATURES
+
+  IMPROVEMENTS
+
+  OPTIMIZATIONS
+
+  BUG FIXES
+
 Release 2.6.3 - UNRELEASED
 
   INCOMPATIBLE CHANGES
diff --git a/hadoop-yarn-project/CHANGES.txt b/hadoop-yarn-project/CHANGES.txt
index eef241b1af..5992ee8a20 100644
--- a/hadoop-yarn-project/CHANGES.txt
+++ b/hadoop-yarn-project/CHANGES.txt
@@ -1957,6 +1957,18 @@ Release 2.7.0 - 2015-04-20
     YARN-3466. Fix RM nodes web page to sort by node HTTP-address, #containers 
     and node-label column (Jason Lowe via wangda)
 
+Release 2.6.4 - UNRELEASED
+
+  INCOMPATIBLE CHANGES
+
+  NEW FEATURES
+
+  IMPROVEMENTS
+
+  OPTIMIZATIONS
+
+  BUG FIXES
+
 Release 2.6.3 - UNRELEASED
 
   INCOMPATIBLE CHANGES