Beta Program Registration
It seem the post from @UBNT-Chance is within a forum not open to the public.
Here is his post:
We're extremely excited to announce that we are opening up our Mesh Router Beta Program to our registered users here on the community. If you are interested in joining the Beta Program, then please complete the following registration form. Once you’ve been approved and added, your AmpliFi devices will begin to receive the Beta Firmware Updates and you’ll be able to start posting and interacting with the Mesh Router Beta Community. This section of the community is where the majority of the beta testing communication will happen. Let us know if you have any questions!
Registration Form: https://goo.gl/forms/zRTkSInReeb7cNfJ2