[matrix]

This is good news for Groovy developers since the Groovy project seems to have run into significant roadblocks with migrating to Java 9+. I'd recommend most other developers on the JVM rip that bandaid off now and get onto Java 11 though, because migrating is not going to get any cheaper or easier.

[vorg]

The roadblocks for Apache Groovy migrating to version 3 are imposed by Groovy's backers themselves. They want to keep it as is for as long as possible to keep Gradle users hooked. If a non-compatible Groovy 3.0 comes out, then Gradle users would more likely upgrade from Groovy 2.x to Kotlin instead of to Groovy 3.0 for their build scripting language. The ASF Groovy project managers want to keep their consulting-and-conferences gravy train running for as long as they can.