RDF4J 2.2 is a minor release. It has several new features and improvements, as well as a number of bug fixes. Some of the highlights:
- #643 - a new RDFS inferencer with better performance on stable schemas (EXPERIMENTAL)
- #449 - improved support for the BCP47 standard for language tags
- #684 #740 - Improvements in background parsing of query results
- #706 - Property-centric access to rdf models via the Models utility.
In total, RDF4J 2.2 addresses 12 issues. See the Change Log for a complete overview.