WWDC 2026: Apple unveils iOS 27, Siri AI revamp, and Liquid Glass customization in Tim Cook’s final keynote

Apple’s Worldwide Developers Conference kicked off this morning at Apple Park, marking what is expected to be CEO Tim Cook’s final keynote before his planned transition to Senior Vice President of Hardware Engineering John Ternus on September 1. The event, which runs through the week, brought a series of software and AI-focused announcements, including iOS 27, significant Siri upgrades, and new customization options for last year’s Liquid Glass design language.

iOS 27 expands device support and boosts performance

Apple announced that iOS 27 will be available on all devices from the iPhone 11 onward, calling it the company’s most widely compatible software release to date. The update includes a range of performance improvements: Apple claims new photos will appear 70 percent faster, AirDrop transfers will be 80 percent quicker, and CPU schedulers have been reworked to improve multitasking efficiency. These optimizations extend across iPadOS and macOS updates as well, signaling a broader push to improve responsiveness across the ecosystem.

Liquid Glass gets opt-in rollback options

Last year’s Liquid Glass design overhaul received mixed feedback from users, and Apple is responding with a new level of customization. Users will now be able to dial back or emphasize specific visual elements of the interface. The company also demonstrated a new layered approach to Liquid Glass within its apps, offering a more refined aesthetic. The update appears designed to address criticism while retaining the core design direction.

Siri and Apple Intelligence take center stage

This year’s WWDC was widely expected to focus on Apple’s AI efforts, particularly after reports that the company had delayed certain features and partnered with Google for some backend AI work. During the keynote, Apple showcased improvements to Siri’s natural language understanding, contextual awareness, and integration with third-party apps. The company also highlighted privacy-focused on-device processing as a key differentiator from competitors. While the full extent of the AI upgrades will become clearer as developers test the beta, the announcements signal Apple’s intent to close the gap with rivals in the AI assistant space.

Why this matters

WWDC 2026 is notable not only for the product announcements but for its transitional significance. Cook’s departure marks the end of an era, and Ternus’s ascension represents a shift toward hardware engineering leadership. The software and AI updates announced this week will be the foundation upon which Ternus’s tenure is built. For consumers, the performance improvements and expanded device support mean that older iPhones will remain viable for longer, while the Siri and AI enhancements could reshape how users interact with their devices daily.

Conclusion

Apple’s WWDC 2026 keynote delivered a mix of practical software updates and strategic AI investments, all set against the backdrop of a leadership transition. iOS 27’s broad compatibility and performance gains, combined with more flexible design options and smarter Siri capabilities, give users and developers a clear roadmap for the year ahead. As the conference continues, further details on developer tools and third-party integrations are expected.

FAQs

Q1: When will iOS 27 be available to the public?
Apple typically releases major iOS updates in September, alongside new iPhone hardware. A public beta is expected in July.

Q2: Will the Liquid Glass rollback options be available on all devices?
Apple stated that the customization features will be available on devices running iOS 27, but some visual effects may require newer hardware.

Q3: How does the new Siri compare to competitors like Google Assistant and ChatGPT?
Apple emphasized on-device processing and privacy, but early reports suggest the updated Siri still lags in some conversational capabilities. Full comparisons will be possible after the public beta release.