He said about eight days ago or so on Patreon that Khemia will resume being worked on. Well, more specifically it's being re-released.
Here's what he said:
"Hey everyone, this is Howly.
Sorry for the long silence from a couple EP projects these past few months. Quite a bit has happened involving a family member of mine, and I am currently in the process of helping them through it. I will likely go into more depth in the post for the final Arches build, as the concluding build has been very much impacted by this experience. Look for it to release this weekend. We're aiming for the 15th.
Now, as for Adastra news. Me and Haps are currently working on Khemia again. While Interea will continue to have sporadic releases, Khemia will be the main focus. I am eager to get back into the main story line and I always felt Scipio has a really interesting story to tell. Shortly after Arches is released, I will re-release Khemia with story alterations. It turns out a lot of themes I wanted to explore in Khemia ended up getting explored in Arches. I'll likely end up incorporating new themes that I find interesting, however, the main story beats, will stay the same. Hoping to have the re-release out in May"