iPhone Duo debuted Sept 9 at Apple Park as a 7.6-inch inner Super Retina XDR that folds to a 5.4-inch outer display in a Grade 5 titanium frame. Apple calls it the first foldable iPhone【https://www.apple.com/newsroom/2026/09/apple-unveils-iphone-duo/†L1-L3】.
The same announcement pushed iPhone 18 Pro and Pro Max on A20 Pro, Watch Series 12 and Ultra 4 on S11, and AirPods 5. The thesis is iPhone as intelligent personal hub.
For security, the affected systems are all of them. The attacker requirement Apple wants you to assume is remote access fails.
Personal context stays on device when possible. When it needs the cloud, Private Cloud Compute extends the same protections and nobody, not even Apple, can access it.
That is the core promise and it is asserted, not demonstrated. No architecture audit or verifier was shown.