Well, it's been well over a year since the last update, so it hardly looks like it's still in development — but there are updates coming. Of note, right now, is that additional artwork is underway for more of the different forms of Shatterkin. I've commissioned a wonderful artist with a lot of experience in monsters like this — I'm very excited for when I can show that off and add it to the core rules document.
On the development side of things, what you can look forward to seeing in the next significant update is a restructuring of the overall gameplay cycle — something that gives it a little more direction, and meaningful objectives, if players want that.