You can now deploy new applications on your Amazon EMR cluster and take advantage of intelligent cluster resizing. Amazon EMR release 4.1.0 offers an upgraded version of Apache Spark (1.5.0), Hue 3.7.1 as a GUI for creating and running Hive and Pig workloads, and the Hadoop Key Management Server (KMS) component for transparent encryption in the Hadoop Distributed File System (HDFS). Additionally, you can now easily install and use Presto, Apache Zeppelin, and Apache Oozie on your clusters. We have introduced them as Sandbox Applications in this release, providing early access to applications which are still in development for a full General Availability (GA) release.

Source: Amazon Web Services News