Update dataflow.properties to use 0.4.0 version instead of 0.4.0-incubating
diff --git a/runners/google-cloud-dataflow-java/src/main/resources/org/apache/beam/runners/dataflow/dataflow.properties b/runners/google-cloud-dataflow-java/src/main/resources/org/apache/beam/runners/dataflow/dataflow.properties
index abfea0c..2928f0f 100644
--- a/runners/google-cloud-dataflow-java/src/main/resources/org/apache/beam/runners/dataflow/dataflow.properties
+++ b/runners/google-cloud-dataflow-java/src/main/resources/org/apache/beam/runners/dataflow/dataflow.properties
@@ -18,6 +18,6 @@
 
 environment.major.version=6
 
-worker.image.batch=dataflow.gcr.io/v1beta3/beam-java-batch:beam-0.4.0-incubating
+worker.image.batch=dataflow.gcr.io/v1beta3/beam-java-batch:beam-0.4.0
 
-worker.image.streaming=dataflow.gcr.io/v1beta3/beam-java-streaming:beam-0.4.0-incubating
+worker.image.streaming=dataflow.gcr.io/v1beta3/beam-java-streaming:beam-0.4.0