Think about it this way: The more testers there are, the more probable it is that someone finds an issue. There are a couple times as many testers as in alpha.
FDS sure has reached the next step, but the main purpose of beta is to thoroughly check the app in every corner to see it’s properly working in order to release a hopefully issue-free final product to the customer.
Yes, we are in beta, but that doesn’t say a thing. At least that’s how I see it.