Hibernate Annotations and Hibernate entity manager 3.2.0.CR3 have been released and are compatible with Hibernate Core 3.2.0.CR5. We decided another CR was needed mainly for two fixes: 1) A fix for the JPA "persist on flush" event; 2) performance improvement in regards to flush processing. This release is expected to be the last one before the GA one See http://annotations.hibernate.org and http://entitymanager.hibernate.org for more informations