We have recently released support for Apache Jena 2.11.2. Internally, we have a working prototype with Apache Jena 3.1.0. Things are looking good but we have to finish many rounds of testing because we can release it. If you want to test an internal early release, please file an SR (and send the SR# to alan dot wu at oracle dot com).
That's exciting news! I'll file an SR and forward the information on to you.