When did you sign up? I just signed up, and it sounds like it takes a year to get access, probably longer now. It's a bit frustrating because I didn't sign up when it came out because I didn't need it at the time, but now I'm afraid of waiting a year when I do. These types of waitlist systems encourage everybody to sign up for everything on the off-chance that they might need it later. Wish they just went with a simple pay-as-you-go model (with free access for researchers and other special cases who request it), like how Copilot does it.
I signed up just over a month ago and from what I've seen, it looks like you won't have to wait more than two months to get your invite. A lot of people who signed up around the same time as me have already received their invites, so it looks like they're speeding things up and getting ready for a public launch soon.
