Apple CEO transition and software overhaul defined at WWDC 2026
The tech giant unveiled updates to the “Class of ’27” operating systems, including performance boosts and adjustments to the Liquid Glass interface, ahead of the September executive change.
Apple convened its Worldwide Developer Conference 2026 at Apple Park in Cupertino on 8 June 2026, marking a pivotal moment in the company’s corporate history. During the keynote, CEO Tim Cook delivered his final address to developers before officially handing over leadership to John Ternus, the senior vice president of hardware engineering, on 1 September. The event, carried under the tagline “All Systems Glow”, served as the primary platform for unveiling the company’s upcoming software roadmap.
The conference centred on the “Class of ’27” operating systems, encompassing updates for iOS 27, macOS 27, iPadOS 27, watchOS 27, and visionOS 27. While pre-event speculation had focused heavily on deeper integration of Apple Intelligence and potential refinements to Siri, the keynote highlighted significant structural changes to the user interface. Central to these updates was a modification of the Liquid Glass design language, which was introduced with last year’s operating system releases.
Apple announced that the Liquid Glass aesthetic would become more configurable, introducing an opacity slider that allows users to adjust the level of transparency across devices. This change addresses previous user feedback regarding the default visual implementation. Alongside these interface adjustments, macOS 27 will feature a more uniform toolbar across applications, sidebars that extend to the screen edges to reduce visual clutter, and tighter corner radii for all windows.
Performance enhancements were also a key focus of the announcement. Apple promised speed improvements of up to 80 percent for AirDrop file transfers. Additionally, the company noted that photos will appear in the camera roll up to 70 percent faster, while messages in Mail and playback in Apple Music will load and start more quickly. These updates are part of a broader refresh that includes redesigned app icons for macOS.
The appointment of Ternus as the incoming CEO suggests a potential strategic shift towards greater hardware innovation, although WWDC traditionally prioritises software development. The transition marks the end of an era for Cook, who has led the company since 2011, and sets the stage for Ternus to define Apple’s direction in the coming years. The new operating systems are expected to be released later this year, incorporating these design and performance refinements.
