Hi thanks for asking!
I'm actually planning an update to the demo to be uploaded (roughly) within the next month~
If you want more regular updates on what I'm working on, I send out a monthly status update via a mailing list: http://bearmask.io/mailing-list
I also post that update in the discord: https://discord.gg/7acATbT
The playtest links are also sent out via the mailing list, I'm not currently planning to send out anymore playtest links though.
Apologies for the slow progress, I'm just one person working on this in my free time, so progress is often slower than I'd like.
Thanks~