In line with the CMS Roadmap, a new working group has been formed to look at the potential for distributing the Joomla CMS in different distributions (rather than the current one-size-fits-all approach). All information, discussions and information can be found at the new github.com/joomla-cms/start-here site. Everyone is welcome to participate.
Read more https://developer.joomla.org/news/569-joomla-cms-distributions-working-group.html