I think this could be a great complement to Scala-native. Right now, the project contributors have to spend effort translating the essential Java libraries that would allow Scala-native to be successful. This could really ease that job for them. It could potentially make all the Java code ever written available to Scala-native.
The other thing it adds is the backing of a giant, like Oracle, which can bring stability and peace of mind to some people, when deciding whether to adopt the technology or not.
- and that it will be generally available for developers (looking at how hard Oracle pushes their Java department to invent commercial features they can sell, I'm not sure about that)
Looking at it, I assume that this will go the way of GWT ... not starting from "how can we make Java a good citizen in this new ecosystem?", but "here we have 100% of Java, the JDK and the JVM ... how can we compile this with full fidelity into X?".
The other thing it adds is the backing of a giant, like Oracle, which can bring stability and peace of mind to some people, when deciding whether to adopt the technology or not.