I was greeted by a dead "Join" link when I accessed the beta community a few moments ago. GW5s are getting it now, hopefully real soon, GW4s.
I read in a media post that any info or posts you made in this beta community will be lost to you when you update to the stable Wear OS4 version. I don't know if that will be true, but if it is you would probably advised to save anything, notes, unresolved issues, etc that you value as it may not be available to you in the future.
