Apple ships iOS 27 beta 4 with major Siri AI upgrade and expanded Apple Intelligence

Apple released iOS 27 beta 4 on July 20, delivering the most substantial Siri overhaul in the cycle. The update introduces a major Siri AI upgrade, a redesigned Dynamic Island visual experience, a dedicated Siri app, and Visual Intelligence integrated into the Camera app. Apple Intelligence expands across Photos, Safari, and Passwords, and MacRumors spotted a secret Siri interface enable-able in the macOS 27 beta, hinting at a unified cross-platform assistant.

The most consequential detail is a hardware one: reports indicate the full Siri AI experience will require at least 12GB of RAM, a threshold that would exclude many current devices and, per Forbes, potentially drive an iPhone 18 Pro 'super cycle' of upgrades. That framing has drawn skepticism — many in the community see the RAM requirement as engineering a forced upgrade rather than a pure capability need.

This lands amid a broader Apple AI push and turbulence: Apple separately sued OpenAI over alleged trade-secret theft and is reportedly hunting AI-chip acquisitions to strengthen in-house server processors after disappointing M2 Ultra performance. Apple's on-device-first approach contrasts sharply with the cloud-scale strategies of OpenAI, Google, and Anthropic, and its late, cautious Siri rollout has left it perceived as trailing.

Competitively, a genuinely capable Siri would matter enormously given Apple's install base, but beta features can slip and the 12GB gate limits near-term reach. Readers should watch the public iOS 27 release timing, whether the RAM requirement holds, and how the OpenAI lawsuit affects any future model-partnership options for Apple.