I've been using HOCON for all my Scala projects and I'm one happy customer! However, there has been no major feature development while issues and pull requests keep piling up, some of which my team could benefit from such as support for more file types, transformations, and validation. That's why I wanted to know whether there's a roadmap for this project and what all features can we expect in the coming months and years.

If there's no plan to add any more features in the next couple of years then can anyone suggest any other configuration file format that has at least as many features as HOCON? Would that be Jsonnet?