1) Can I run jlink somewhere in the build process?
2) Can I use a private npm repo like Verdaccio, or are there plans for other (non npm?) backends in the future?
No need. Just specify your JVM requirements and the launcher will automatically use (or download if necessary) a compatible VM. This allows JVMs to be shared between apps, and your app updates are much smaller since they don't include the VM bundled directly.
> 2) Can I use a private npm repo like Verdaccio, or are there plans for other (non npm?) backends in the future?
Right now it's pegged to the public npm repo, but I'll be exploring other options soon, including private repos, self hosting, GitHub releases.
Either way, really exciting stuff, we'll definitely have a play! Any plans for commercial features in the future?
I'll have to find out what kinds of features are of interest to commercial clients. I'd like to find some way to support continued development. Commercial features are certainly a possibility.