This is great news and it should (finally!) work on JDK8 although it won't have JDK8-specific optimizations, which is a pity - as far as I remember, it's planned for v1.2, which probably be out when JDK9 is out, too. I personally would like faster catchup time with the latest JDK, especially when previews are available in advance. Kudos to Groovy that release JDK8-optimized version pretty quickly!