I registered both for my Japanese account (it was a download lottery on PSN) and my North American account (it was a website registration with Bandai Namco). I received an email with a code for my Japanese account this morning (9/13, 4:46 a.m. eastern time). No email from North American branch yet.
You can download and install now, but server/connectivity isn't up and you just get sent back to the title screen. Crazy metal music playing.
I certainly didn't see, agree to, or sign an NDA for this, but then again I didn't actually read the text on the Japanese lottery download page. I can't speak to "influencers" who may have received or were playing anything ahead of time; I know plenty of them were invited up to capture game footage in and around and separate from recent conventions/expos, but I have no idea who may have gotten beta access ahead of now.