
The expected release date for the iOS 18 developer beta is June 10, 2024, right after the WWDC keynote. This is based on Apple's historical pattern of releasing the first developer beta of each major iOS update on the same day as the yearly WWDC keynote.

At WWDC 2024, alongside iOS 18, we can expect updates for several other Apple operating systems, including:
iPadOS 18: This update is expected to bring new features and improvements to the iPad, with a focus on multitasking and productivity.
watchOS 11: This update will likely introduce new health and fitness features, as well as improvements to the overall user interface and performance of the Apple Watch.
macOS 15: The next version of macOS is anticipated to bring enhancements to the desktop operating system, potentially including new features related to AI and improved integration with other Apple devices6.
tvOS 18: The operating system for Apple TV is expected to receive updates that will improve the overall user experience and potentially introduce new features related to gaming and content streaming.
visionOS 2: This operating system powers the Apple Vision Pro headset, and an update could bring new features and improvements to the device's functionality and user experience.
These updates will be showcased during WWDC 2024, with developer betas being released shortly after the event. Public releases of the updated operating systems are typically rolled out in the fall, following a period of beta testing and refinement.

Apple has made the iOS 18 beta more accessible to developers compared to previous years by offering it for free, without requiring a $99/year subscription. This change was first introduced last year, making it easier for developers to test and work with the latest version of Apple's mobile operating system.