I have something ready: https://github.com/yrodiere/hibernate-search/tree/HSEARCH-3518

… but it requires to create a separate dialect for 6.7, which feels weird for various reason (Quarkus in particular). We discussed it with Guillaume, and decided we should try to introduce a concept of “runtime dialect”, that has no impact on the mapping but may slightly alter how we send queries to the cluster. In short it would determine the ElastocsearchWorkBuilderFactory. It could be resolved at runtime based on the version detected on the cluster.