Apple has released the iOS 27.0 release candidate and the matching iPadOS 27.0 release candidate, moving the company's next major iPhone and iPad software updates into their final public-testing stage. Apple says iOS 27 will be available as a free update on Monday, September 14.
A release candidate is the build Apple intends to ship publicly if final testing does not reveal a serious problem. It is still pre-release software, so Apple can issue a revised release candidate before the final rollout if needed. Apple Developer lists iOS 27.0 RC build 24A435, released on September 9.
The headline feature is Siri AI, a redesigned Apple Intelligence-powered assistant with personal-context understanding, app actions, onscreen awareness and broad world knowledge. Siri AI will launch in beta on September 14 for supported devices set to English. Apple says it will not initially be available on iPhone or iPad in the European Union.
iOS 27 RC, Public Release and Siri AI Status
What a Release Candidate Means
A release candidate is not the same as the stable public version, even when it is close to final. It is an important checkpoint for developers, public beta testers and organisations that need to validate apps, accessories and device-management tools before the broader rollout.
For most iPhone and iPad owners who are not already enrolled in beta software, the practical date is September 14. Installing an RC is optional and can carry the usual risks of pre-release software, including unexpected bugs or compatibility issues.
MacRumors reported that registered developers and public beta testers can obtain the release candidates through Settings, then General, then Software Update. Apple has not promised that the September 9 builds will be identical to the September 14 public release, though that is the purpose of an RC if no significant issues are discovered.
Siri AI Is the Major Change, With Important Limits
Siri AI is Apple's new version of Siri, powered by Apple Intelligence. Apple says it can use personal context from information such as messages, email and photos, understand what is on screen, answer broader questions and take actions in apps.
The company is also introducing a dedicated Siri app for starting or revisiting conversations, Siri mode in the Camera app for Visual Intelligence tasks, and systemwide writing assistance through Write with Siri.
Those capabilities should not be presented as universally available from day one. Apple says Siri AI is a beta feature at launch, begins with English and requires supported Apple Intelligence hardware. Apple has also said that Siri AI and features that rely on it will not initially be available on iOS and iPadOS in the European Union.
iOS 27 Feature Availability at Launch
Apple previously said Apple Intelligence and Siri AI in iOS 27 require an iPhone 15 Pro, iPhone 15 Pro Max, or an iPhone 16 model or later. That hardware requirement means an iPhone can receive the iOS 27 operating-system update while not receiving every Apple Intelligence or Siri AI feature.
iOS 27 and iPadOS 27 in the Broader Apple Release Cycle
The September 9 release candidates arrived with RC versions of Apple's other operating systems, including macOS 27, watchOS 27, tvOS 27 and visionOS 27. Apple has also opened App Store submissions for software built with the latest operating-system SDKs.
For app developers, the RC period is a final opportunity to test crashes, layout changes, permissions, background tasks and Apple Intelligence integrations before users start updating their devices. Apple says apps and games submitted to App Store Connect must be built with the iOS 27 and iPadOS 27 SDK or later beginning in April 2027.
For regular users, the important question is not whether the RC appeared today. It is whether their device supports iOS 27 and whether the specific feature they want is available for their hardware, language and region.
What About iOS 26.7?
MacRumors also reported that Apple issued an iOS 26.7 release candidate. The report did not provide a detailed public feature list for that update.
This type of parallel update is not unusual near a major iOS release. Apple can continue to maintain the previous branch for devices, users or organisations that are not moving immediately to the newest major version. Until Apple publishes complete release notes, specific iOS 26.7 changes should not be assumed.
Release Candidate Versus Public Release
FAQ
When is iOS 27 coming out?
Apple says iOS 27 will be released as a free software update on Monday, September 14, 2026.
What is the iOS 27 release candidate?
It is a near-final pre-release build that Apple provides for final testing. Apple can still revise it before the public release if important bugs are found.
Can public beta testers download the iOS 27 RC?
MacRumors reported that registered developers and public beta testers can download the RC through Settings, General and Software Update.
Will Siri AI be available to everyone on iOS 27?
No. Siri AI launches as an English-language beta for supported Apple Intelligence devices. Apple says it will not initially be available on iPhone or iPad in the European Union.
Do older iPhones get iOS 27 but not Siri AI?
Apple has said Apple Intelligence and Siri AI require an iPhone 15 Pro, iPhone 15 Pro Max, or an iPhone 16 model or later. An iPhone may receive iOS 27 while lacking the hardware for Siri AI.
Bottom Line
Apple has moved iOS 27 and iPadOS 27 to the release-candidate stage, with public availability confirmed for September 14. The RC signals that the update is close to completion, but it remains test software until Apple releases the final version.
Siri AI is the update's most significant addition, but it will have a narrower launch than the iOS 27 headline suggests. It starts as an English beta on Apple Intelligence-enabled devices and will not initially reach iPhone or iPad users in the European Union. Users should check device support, language requirements and region-specific availability before expecting every iOS 27 feature on launch day.
Sources and Attribution
- Apple Developer lists iOS 27.0 RC build 24A435 and iPadOS 27.0 RC build 24A435 as released on September 9, 2026. 1 2
- Apple confirmed iOS 27 will be a free update on September 14 and said Siri AI will launch as a beta for supported devices in English. 2
- Apple says Siri AI will not initially be available on iOS and iPadOS in the European Union. 6
- Apple Developer says submissions are open for apps built with the latest OS releases and SDKs. 3
- MacRumors reported that registered developers and public beta testers can download the release candidates through Software Update and that iOS 26.7 RC was also issued. 1
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