Beta testers in the Apple system software programs will find iOS 15.4 beta 4, iPadOS 15.4 beta 4, and macOS Monterey 12.3 beta 4 available to test on their enrolled devices.
Beta 4 of iOS 15.4 adds a new Siri voice option, called American Voice 5, which appears to be a gender neutral tone.
Betas of iOS 15.4 also includes a new stalking warning during AirTags setup, informing the user that in some parts of the world using an AirTag to track someone without permission may be a crime.
Additionally, iOS 15.4 beta includes support for using Face ID with a mask, iCloud Keychain notes, new Emoji icons, an Apple Card widget, support for COVID EU digital vaccination passes, and support for contactless payments with Tap-to-Pay which allow an iPhone to accept payments directly. iPadOS 15.4 beta also includes support Face ID with a mask, new Emoji icons, iCloud Keychain notes, and the Apple Card widget.
Betas of iPadOS 15.4 and macOS Monterey 12.3 also include support for Universal Control, the highly anticipated feature that allows a single mouse and keyboard to control multiple Macs and iPads seamlessly by moving the cursor between screen. If you’re interested, you can try Universal Control now by installing beta system software onto a Mac and iPad.
macOS Monterey 12.3 beta removes Python 2 which users can sort of workaround by installing and making Python 3 default if they’re impacted by that change.
Each beta of iOS 15.4, iPadOS 15.4, and macOS Monterey 12.3 includes new Emoji icons, including a melting face, salute, troll, pregnant man, pregnant person, disco ball, low battery icon, biting lip, hands forming a heart, bubbles, a teared up face, an empty jar, an empty nest, an x-ray, coral, beans, and more. New Emoji icons are often a significant attraction to many users to update their devices.
Anyone enrolled in the beta testing programs can find the latest beta build available to download now.
For iOS and iPadOS betas, go to Settings > General > Software Update.
For macOS betas, go to > System Preferences > Software Update.
Separately, there are new betas available for watchOS and tvOS as well.
Apple typically goes through several beta releases before issuing a final version to the general public. There are rumors of an Apple Event falling on March 8, which may offer a clue as to when the timeline of when the final releases of iOS 15.4, iPadOS 15.4, and macOS Monterey 12.3 may be available.