Apple Fall 2026 Lineup: Everything We Know About the iPhone 18 Pro, Foldable 'Ultra,' Watch Ultra 4, and Siri AI

Bloomberg's Mark Gurman has described the iPhone 18 Pro's camera upgrades as "some of the biggest camera hardware upgrades in the lineup's history" .

Foldable iPhone ("iPhone Ultra")

Apple's first foldable device is still on track for a September 2026 unveiling, though actual shipments may slip to as late as December 2026 .

Key details (rumored):

• Branding: Likely "iPhone Ultra," not "iPhone Fold" .
• Design: Book-style foldable, roughly 7.7–7.8-inch internal display and a 5.3–5.5-inch external cover display .
• A20 chip (same generation as iPhone 18 line) paired with 12GB of RAM .
• Price: $1,999–$2,499 .
• LiquidMetal hinge for improved durability .
• Some reports suggest Touch ID (side button) instead of Face ID on the foldable .

Apple Watch Ultra 4

Expected to launch in September alongside the iPhone 18 lineup .

Key upgrades (rumored):

• First major redesign since the original Ultra — a significant chassis change, per a May 2026 Digitimes supply-chain report .
• New health sensors — an earlier Digitimes report described eight sensors arranged in a new module array .
• New chip (likely S11 or S12) — faster performance and improved power efficiency .
• Possible Touch ID in the side button (leaked internal Apple code) , though some later leaks suggest Apple may skip Touch ID and focus on battery and AI instead .

Apple Watch Series 12

Also expected in September 2026 .

Key upgrades (rumored):

• New chip (likely S11/S12 branding) — a meaningful performance uplift over the S9/S10 generation .
• Possible Touch ID in side button — conflicting reports exist on whether this will ship .
• Battery life improvements and satellite connectivity features .

watchOS 27 — Software & Siri AI

watchOS 27 was officially announced at WWDC on June 8, 2026, with a public release expected in September alongside the new watches .

Confirmed features:

• New Siri AI app — a standalone, AI-powered Siri experience on Apple Watch, bringing on-device large-language-model capabilities for the first time .
• Dynamic app grid — redesigned home screen layout .
• Single-tap Siri activation .
• Workout Buddy — works without an iPhone nearby .
• HealthKit expansion — heart rate and cycling power zones opened to third-party apps .
• Compatibility: Only Apple Watch Series 9, Series 10, and newer (drops Series 8, original Ultra, and SE 2) .

New Apple TV 4K

Less detail is available, but earlier roadmap reports indicate a refresh is possible for fall 2026.

Rumored specs:

• A17 Pro chip — unlocking Apple Intelligence features for tvOS .
• Built-in camera — possibly for FaceTime and video calls on the TV .

This hardware detail is sourced from earlier roadmap roundups (late 2025 / early 2026) and has less corroboration than iPhone and Watch leaks.

Revamped Siri AI as the Cross-Device Glue

The reborn Siri — powered by Apple's on-device large language model infrastructure — is the connective tissue across all these devices :

• On iPhone 18 Pro, Siri AI handles complex multi-step tasks, contextual awareness, and on-device intelligence through Apple Intelligence.
• On watchOS 27, Siri AI arrives on the wrist for the first time as a dedicated app, enabling voice-controlled health queries, workout coaching, and quick tasks without needing to pull out the iPhone .
• On the foldable iPhone Ultra, the A20 chip's neural engine runs advanced Siri AI across the larger canvas.
• On Apple TV 4K, Apple Intelligence unlocks new Siri-driven search, media control, and on-screen awareness (if the A17 Pro chip materializes).

The core narrative is that Siri AI is evolving from a basic voice assistant into a proactive, context-aware agent that follows you across iPhone, Watch, TV, and the new foldable — all powered by the same on-device Apple Intelligence engine .

Bottom line: Apple's fall 2026 lineup is shaping up to be its most ambitious hardware cycle in years — headlined by the first foldable iPhone, major camera and chip upgrades on the Pro iPhones, a redesigned Ultra 4, and the debut of Siri AI on the Watch via watchOS 27. All details beyond watchOS 27's confirmed features remain rumors until Apple's official event.