The release date is supposed to be "early 2021" which I'm guessing would be Q1. If I go to walkingdre.am and try to subscribe to their mailing list, I get a 404

The release date is supposed to be "early 2021" which I'm guessing would be Q1. If I go to walkingdre.am and try to subscribe to their mailing list, I get a 404. I wonder what the status of this project is.