Spark 1.4 is fully supported.
More components are available , such as:
New ElasticSearch components to read data from ElasticSearch and provide ElasticSearch connection configuration for reuse.
Native connectors to Hive with the support of ORC file format.
New processing component: tTopBy.
The tLoop component is added to allow users to create iterations on a task execution in a Spark Batch Job.
Support for Continuous Integration has been added to Spark Batch Jobs.