Latest update:
Signups for beta testers will open in 2 weeks. You need to be an author with a published book to qualify for registration. Thank you
Please where did you get he update? Also, I'm not a publisher. Does this mean I won't be a tester? Or what benefit does this hold for publishers?
I read this update on Facebook I think. I have no idea what the benefit would be for author-testers. I remember they had a good benefit for the first 100 000 authors or so. But I forgot what it was. It seems so long ago.

it was a guaranteed earnings for the first 100k authors to join their network.