Yeah, we discussed it a bit already on the IRC chat (join us!). There was an article about it here and a nice overview video here.
I think you can play it in the browser here, but indeed registration required.
The game itself seems not that interesting to me personally, but it includes some very high quality pixel art assets (CC0 licensed as well) that might be useful for other projects. I was thinking mainly about a libre asset pack for VCMI, but there were some other ideas on the chat as well.