I upvoted because this does sound interesting, but as another commenter said, at the moment it appears to be vaporware (or at least invite-only, since they ask

I upvoted because this does sound interesting, but as another commenter said, at the moment it appears to be vaporware (or at least invite-only, since they ask people to email code@radiant.earth). Is there something real behind this or is it a scam to get newsletter subscriptions?