Yes! The project leader posted a pic of progress on the Regolith Slack a few days ago. No ETA that I know of but swing by the Slack to stay up to date. [1]
I had a hard time understanding this message. In the context of linux distributions, it seemed to me that there were ubuntu-based and slack-based distributions for regolith. This sounds really cool because slack is bare-bones and it means that regolith has made a conscious effort at portability. But this is not the case, and it has nothing to do with slackware.
[1] https://regolith-linux.herokuapp.com/