In short, yes, it’s licensed and yes, you can use it for free.
The project is under development and should be publicly announced in the near future.
It’s licensed under the default GridGain community edition license and basically, It means that it’s free to use, you might find more information about the license at the official website, though.
It also should works with both versions: Apache Ignite and GridGain editions, but It’s better to wait for Apache Ignite 2.9 release for about a week or so, cause it should come with an improved image that works better under k8s management (with 2.8.1 it’s cumbersome to scale the cluster down).
The last warning – please, remember that it’s a beta version and use it on your own risk for now.
Please, share your thought if you’d like to try it, any feedback is welcomed!