Apple releases iOS 27, macOS Golden Gate 27 with Siri AI and Liquid Glass refinements
This is also the last version of macOS to support Rosetta for Intel apps.

TL;DR
- Apple has released major annual updates for iOS, macOS, watchOS, visionOS, and tvOS.
- Siri AI, a context-aware large language model assistant, is a key feature across most OS updates.
- Siri AI can understand natural language, interact with apps, and assist with tasks like generating automations.
- New 'Apple Intelligence' features are powered by Apple-developed AFM 3 models, running both on-device and in the cloud.
- macOS 27 Golden Gate and iOS 27 feature a 'Liquid Glass' design transparency slider and other design tweaks.
- macOS gains HDR for system UI and improved external monitor support.
- tvOS 27 focuses on Podcasts and Music app updates, while watchOS 27 adds the Siri app, new watch faces, and health features.
- visionOS 27 includes a new virtual environment and improved screen recording.
- Siri AI requires iPhone 15 Pro or later, while iOS 27 supports iPhone 11 and later.
- macOS 27 Golden Gate is the last version to support Rosetta for running Intel-based applications.