There was a short demo of the latest state of Associativy on the Orchard Community Meeting. What you can see will be part of the upcoming release and is already available for testing in the source code. There is a new branch called 1.7 too. It contains some code that works only with the latest source (building up the upcoming v1.7) of Orchard, taking advantage of the new feature of being able to have multiple search indices.
In short, there are many improvements what you can already see and try: better APIs, many, many performance improvements and much better Neo4j support. See the demo (form 13:20):