iOS 27 is out now in Australia. It arrived this week. Apple says to prepare your device first. You should make a full backup. You should also confirm free storage. The update brings new features. Siri has been given an overhaul. New system tools are added. Compatibility includes iPhone 12 and later models. Recent iPads are compatible as well. Older devices like iPhone 11 do not qualify. Users are encouraged to prepare before updating. A backup is recommended. Free space is needed. The rollout is happening now.