iOS 27 is out now in Australia. It rolled out this week. Apple says to do a pre-update check first. You should make a full backup. You should also check storage space. The update brings new features. Siri has been given an overhaul. Fresh system utilities are added. Compatibility covers iPhone 12 and later models. Recent iPads are also supported. Older devices like iPhone 11 miss out. Users are told to prepare before updating. A backup is a good idea. Free space is needed. The rollout is underway.