Versioning is not currently built into Jigsaw, but Jigsaw provides all the building blocks necessary to support it in third-party tools.
> For the past ten years Mark Reinhold would give talks at Java conferences what the module system comping in the next Java version was supposed to do and every year the content was different.
Plus the entire development was done in the open, in an open source project with an active mailing list and frequent prototypes.