There is still a waitlist but we're working hard to open things up ASAP. Some people will never believe it, but the waitlist was never intended as a growth hack. It was purely an attempt to keep the network healthy and the servers from catching on fire as we iterated on the app itself.

For devs that want to experiment, we've had a special waitlist for a while: https://atproto.com/blog/call-for-developers