Overview
- Apple seeded the fourth developer betas of iOS 27, iPadOS 27, macOS 27 and tvOS 27 on Monday, delivering UI tweaks, a Siri AI splash screen and expanded expressive Siri voices.
- Public beta 2 for iOS 27 and companion builds rolled out to enrolled testers on July 22, offering the same polish for a wider group while Apple continues to iterate before the fall release.
- Apple also issued release candidates for iOS 26.6 and other 26.x updates that include security fixes and Spotlight index optimizations designed to prepare devices for iOS 27 and are expected to ship to general users soon.
- Key Siri AI and Apple Intelligence capabilities use a mix of on‑device models and private cloud compute, but the most advanced features are gated by newer Apple Intelligence‑compatible hardware, higher iCloud+ tiers or waitlist activation.
- Beta 4 contains miscellaneous code references such as strings mentioning dual batteries that may hint at future hardware but remain unconfirmed, and Apple and outlets continue to warn testers to install betas only on secondary devices due to instability risks.