
iOS 17 running on an iPhone
On Monday, Apple released its updates for the current-gen operating systems in its ecosystem, including iOS 18.4, iPadOS 18.4, and macOS 15.4. At the same time, it introduced updates for earlier operating system releases, which can be downloaded and installed by users to older hardware.
While the main focus is on keeping operating systems up to date, Apple does occasionally bring out updates for earlier operating system releases.