Firefox Beta as well.

There is a hidden way to activate more extensions and most - if not the vast majority - extensions work fine.

We get 3 months at our current rate and then they’re bumping us up to this new price.

“Existing subscribers will start to see the new pricing with their next billing cycle. An upcoming email will explain the changes. Those who were grandfathered in five years ago (with Google Play Music and/or YouTube Red) will get three additional months at their current rate.”

https://9to5google.com/2023/07/19/youtube-premium-price-increase/

I got my invite a couple weeks ago, so they have definitely been working down the wait-list.