Apple has just released beta 3 (build 19E5225g) for iOS 15.4 on iPhone and iPadOS 15.4 on iPad. It comes a week after the previous one and concerns the developers for the moment. Public testers will have it soon.
Beta 3 available for iOS 15.4
There is currently no information regarding the new features to be found in beta 3 of iOS 15.4. The first version had in particular been the opportunity to have Universal Control (Universal Control) and the possibility of using Face ID with a mask. The second version marked the implementation of Tap to Pay to transform the iPhone into a payment terminal. To see what the beta of the day has in store for us.
If your device is set up to receive developer betas, go to Settings > General > Software Update. You can start downloading iOS 15.4 beta 3 and then install it immediately. The final version could well arrive in March, after the keynote where the new iPhone SE will be announced.
In addition, Apple offers the third beta for macOS 12.3 (build 21E5212f) on Mac, for tvOS 15.4 (build 19L5425e) on Apple TV and for watchOS 8.5 (build 19T5228d) for Apple Watch. Again, there is talk of availability for developers, the public beta will probably arrive tomorrow.