Will Elasticsearch support OpenJ9 in the future?

Elastic Stack Elasticsearch
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I suppose 'OpenJDK 9' is different from 'OpenJ9'? OpenJ9 is another Java runtime based on OpenJDK and maintained by eclipse foundation.
https://www.eclipse.org/openj9/

Though I'm not sure in the following case, the mentioned 'IBM J9 VM' is the same thing from 'OpenJ9' or not, but at least they should work pretty much like each other since OpenJ9 is originally donated by IBM. And in the matrix, IBM JVM is still unable to run Elasticsearch.