According to TapTechNews on June 11th, Apple today announced a new generation of systems such as iOS 18, iPadOS 18, and macOS 15 at WWDC 2024. The developer beta version will be released today, and the public beta version will be released next month. All these systems will be pushed to users in the autumn of this year.
Apple has not released the new system description file for the time being, and TapTechNews will update it later.
Apple WWDC 2024 Developer Conference Keynote Topic