Well, this is a sign up. How you get the opportunity to sign up I dunno. I got 60% of the trophies on Demon's Souls. Dark Souls 1 and 2 aren't on my PSN account though. I played and completed Dark Souls 2 on PC.
Hopefully, they'll just be letting everyone in, as it's an online test it will need stress tested. Maybe there's one or two "weed people out" algorithms in place, but I'm sure most of us will get accepted.