I don't think I've seen anything recently, though the manufacturer was active in this topic, and perhaps if you requested an update (or that they send staff an engineering sample with the WS or TCP API docs), they might be receptive:
If you wanted to write a driver on your own, the websocket API sounds like the easiest path for direct integration. You're going to need to know at least the basics of the Hubitat development environment (and hub features like events/attributes), how to write a driver in general, and how to use Hubitat's documented websocket interface for communication. This document, plus the suggested prior reading linked to from it, might be a good starting point: Building a LAN or Cloud Driver | Hubitat Documentation
