"ios-15-4"

As per Mac Rumours, Apple didn't share an exact release date of iOS 15.4 which was being in development since the beginning of the year.

It looks like Apple was able to squash the Core Animation bug that would not allow animations to go beyond 60 fps, reports GSMArena.

According to MacRumors, the iOS 15.4 beta added a new feature designed to allow Face ID to be used with a mask and without an Apple Watch for authentication.