Here’s what’s new with iOS 27 beta 4

Apple released iOS 27 beta 4 today with build number 23G71, available now for developer beta testers. The update introduces a new Siri AI splash screen, fixes the depth effect bug from beta 3, and adds enhanced Siri voices with pace and expressivity, while five legacy voices still show those sliders as coming soon. iOS 27 supports iPhone 11 and later, with Siri AI and Apple Intelligence features requiring newer hardware, and the official release is expected in September.

Apple released iOS 27 beta 4 today, giving developers the next preview update since iOS 27 debuted at WWDC. Developers can download the new beta now. iOS 27 is a major iPhone update centered around Siri AI, Apple Intelligence, Liquid Glass refinements, and a long list of quality-of-life changes. Here’s what we’ve found so far in iOS 27 beta 4. iOS 27 beta 4 details iOS 27 beta 4 is available now for developer beta testers. The build number is 23G71. You can install the update by opening the Settings app, choosing General, then Software Update. From there, select iOS 27 Developer Beta under Beta Updates. As with any beta release, we do not recommend installing iOS 27 beta 4 on a primary iPhone without expecting potential performance issues. You should expect bugs, battery life differences, app compatibility challenges, and other rough edges until Apple gets closer to the fall release. iOS 27 beta 4: What’s new? Here are some changes we’ve found in iOS 27 beta 4 so far. - Siri AI has a new “splash screen” when invoking Siri from the Dynamic Island or swiping down on the Home screen. - This beta fixes the depth effect bug that beta 3 introduced. It was fun while it lasted. - Siri has two enhanced voices with pace and expressivity working. Five legacy voices still show pace and expressivity sliders as coming soon. - Possibly new? There’s a Health data sharing reminder that works similarly to location use alerts. Find anything else? Let us know at tips@9to5mac.com. Not every iOS 27 feature is available on every iPhone. The update supports iPhone 11 and later, plus iPhone SE 2 and newer, while Siri AI and other Apple Intelligence features require newer hardware. Apple will continue beta testing iOS 27 throughout the summer. A public beta was released last week https://9to5mac.com/2026/07/13/ios-27-public-beta/ . The official release for everyone should arrive in September alongside the new iPhone lineup. Have you found anything new in iOS 27 beta 4? Let us know in the comments. Do more with your Apple products Apple AirTag 2 | Add Find My tracking to keys, bags, bikes, more https://amzn.to/4vjNWN1 AirPods 4 | Apple’s newest wireless headphones https://amzn.to/43ndewV AirPods Pro 3 | Apple’s best wireless headphones https://amzn.to/4ut3FYp Beats USB-A to USB-C Cable | The official CarPlay cable https://amzn.to/4mpKs7K FTC: We use income earning auto affiliate links. More. https://9to5mac.com/about/ affiliate our homepage http://9to5mac.com/ for all the latest news, and follow 9to5Mac on exclusive stories https://9to5mac.com/feature/exclusive/ , reviews https://9to5mac.com/guides/review/ , how-tos https://9to5mac.com/guides/how-to/ , and subscribe to our YouTube channel https://www.youtube.com/9to5mac