We are getting closer to a final release and this version is mainly about
improving general performance and reducing the amount of round trips to the
We also added optimistic locking support for datastores which provide
atomic find-and-update operations.
You can read more about it in the blog post:
It’s my great pleasure to announce the release of Hibernate OGM 4.1.0.Beta7!
The release brings support for MongoDB’s object id, a clarification of what
are our public API/SPI packages as well as several bugfixes and many other
improvements. Check out the announcement post  for all the details.