Chione's last update was a couple years ago, which completed the infrastructure. I haven't touched it since then, and I wouldn't expect another update for a while, if ever.
That being said, like the rest of my work now anyone who still has it in them is welcome to pick it up and finish it, or make further tweaks as they see fit. Just be sure to check with Mea as well if you plan on messing with the artwork at all.
I know, and I still have the new version for my game, truly an great metaroom. Badly, I'm more of an archivist than anything, so I don't knows how to work with codes.
Also, by the ways, thanks for your creations