Preview at WWDC likely in June, followed by September launch.
Apple's Decision to Delay Some New Features and Focus on Software Quality Extends to Mac
Gurman's sources corroborate an earlier report from Ina Fried at Axios, which claimed that Apple's software engineering chief Craig Federighi disclosed the revised plans during a meeting with employees earlier this month.
While the shift in strategy appears to extend to macOS, it reportedly will not affect the development cycles of watchOS or tvOS.
The company told its software engineering groups about the change this month, one of the people said. The shift will also affect this year's update to Mac computer software, but to a lesser degree, the person said, adding that planned upgrades to Apple Watch and Apple TV software won’t be affected.Apple's plans to focus on the quality of its current software platforms will presumably result in a greater emphasis on bug fixes, performance improvements, and the general stability of its operating systems.
The shift in strategy follows a few embarrassing mishaps for Apple in recent months, including a major security vulnerability that enabled access to the root superuser account with a blank password on macOS High Sierra version 10.13.1. Apple promptly fixed the critical bug in a security update.
Just weeks later, MacRumors was alerted to a security flaw in macOS High Sierra version 10.13.2 that allowed the App Store menu in System Preferences to be unlocked with any password. While this bug was much less serious, it was still system behavior that obviously shouldn't have been possible.
Apple had a similar shift in strategy in 2015 with the release of iOS 9, and with some other macOS updates in recent years, according to the report, so this isn't Apple's first time doubling down on the polish of its software.
The report also corroborates that Apple was planning a redesigned grid of app icons on the home screen in iOS 12, but that change is now delayed until 2019 along with expanded photo management capabilities. There's also word of a multiplayer mode for augmented reality games, but it's unclear when it'll be ready.
Gurman still expects some smaller improvements to the Photos app to roll out in 2018, while the original report by Fried mentioned enhancements to the Health app and parental controls are still planned for release this year.