MarkLogic 9 was released May 2017.
MarkLogic 9 provides new features and enhancements to make data integration easier and more powerful. Entity Services helps define a model for your integrated data, supporting the creation of a scalable, performant data hub. Moving data into, out of, or between MarkLogic clusters will be easier with the Data Movement SDK. With Template-Driven Extraction, you can now get data into the indexes without modifying your document structure. The Optic API powers document joins and aggregates, group-bys and other tabular operations on data stored in documents.
MarkLogic’s government-grade security takes the next step, adding Encryption at Rest and Element-Level Security. With the new Redaction feature, it’s easier to make production data safe for use in your development and test environments.
Here are some resources you can use to explore what MarkLogic 9 has to offer: