Apple Details iOS and iPadOS 27 RC Release Notes featuring Siri AI Upgrades
The Release Candidate (RC) changelog for iOS and iPadOS 27 details major updates, including upgraded Siri AI with contextual awareness, generative photo tools, and expanded parental controls. Siri now features a standalone app, writing assistance across system apps, and visual intelligence integration within the Camera app. The update highlights Apple's effort to deeply integrate on-device generative AI into core operating system features ranging from photography to accessibility. It also significantly strengthens device management for families through granular app restrictions and safety filters. Advanced Apple Intelligence features are limited to iPhone 15 Pro, iPhone 16, and newer devices, with some on-device voice model customizations reserved for upcoming models like iPhone Air and iPhone 17 Pro. Additional updates include a customizable 'Liquid Glass' UI transparency slider, natural-language Shortcut creation, and HomeKit security video summaries.
## BACKGROUND
On-device AI executes machine learning models directly on local hardware like smartphones rather than cloud servers, enhancing user privacy and performance. A Release Candidate (RC) represents the final build of a software version provided to testers before its public release.