Apple Inc. used its Worldwide Developers Conference (WWDC) 2026 keynote to unveil a sweeping set of software and artificial intelligence updates, headlined by a revamped Siri AI assistant, enhanced on-device search capabilities and upgrades to its Liquid Glass design language. The annual developer event also marked outgoing Chief Executive Officer Tim Cook's final WWDC keynote before handing over leadership to John Ternus later this year, as Apple sought to reassure developers and investors about its long-term AI strategy.