Update CHANGES.txt for 2.6.1rc1.
diff --git a/CHANGES.txt b/CHANGES.txt
index 214d8d9..26d0e5d 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -1,3 +1,20 @@
+2014-10-09 version 2.6.1rc1:
+
+ C++
+ * Added atomicops support for Solaris.
+ * Released memory allocated by InitializeDefaultRepeatedFields() and
+ GetEmptyString(). Some memory sanitizers reported them as memory leaks.
+
+ Java
+ * Updated DynamicMessage.setField() to handle repeated enum values
+ correctly.
+ * Fixed a bug that caused NullPointerException to be thrown when
+ converting manually constructed FileDescriptorProto to
+ FileDescriptor.
+
+ Python
+ * Fixed a missing file problem of Python C++ implementation.
+
2014-08-15 version 2.6.0:
General