Apple is said to be delaying a significant number of features initially planned for iOS 19, with the release now expected to be moved to iOS 19.4, which is anticipated to launch in spring 2026, as reported by Mark Gurman from Bloomberg.
While details remain scarce, Gurman noted that the delay affects more than just the much-anticipated upgrade to Siri.
Gurman stated,
A larger-than-usual number of features scheduled for iOS 19 (beyond the new Siri) are already postponed until spring 2026.
Siri Overhaul: The ‘LLM Siri’ Initiative
One key feature expected in iOS 19 is a major upgrade to Siri, referred to internally as “LLM Siri.” This revamped assistant will integrate advanced large language models (LLMs) to handle tasks more intuitively, akin to platforms like ChatGPT and Google’s Gemini. While announced alongside iOS 19 at WWDC 2025, this upgraded Siri will not debut until iOS 19.4.
The updated Siri is expected to perform complex tasks, summarize text, and interact with third-party apps through improved App Intents. Gurman added that Apple aims to incorporate features prioritizing user privacy, setting its AI capabilities apart from competitors.
iOS 19 Timeline and iPhone 17 Release
iOS 19 is set to be unveiled at Apple’s annual WWDC event in June 2025, with its first public release slated for September 2025, coinciding with the launch of the iPhone 17 lineup. The new devices are rumored to introduce a completely new form factor, tentatively called the “iPhone 17 Air.”
Current Progress and Future Upgrades
Siri’s transformation is part of Apple’s gradual AI strategy, starting with minor improvements in iOS 18. Recent updates introduced features like a redesigned interface, better handling of commands, and the ability to type requests. December’s iOS 18.2 update will further integrate ChatGPT, while iOS 18.3 will enable Siri to understand personal contexts and perform app actions.
However, Gurman emphasized that the current updates are only incremental, stating,
Siri is still based on outdated infrastructure — AI models that lag behind the technology used by ChatGPT and Google’s Gemini.
A Strategic Shift in Apple’s Release Cycle
Apple appears to be adopting a staggered approach to releasing features. While iOS 18.4, arriving this spring, will include significant updates, many capabilities originally planned for iOS 19 are now postponed. This method allows Apple to refine its technology before release but also highlights the challenges of building in-house AI solutions.
Gurman concluded that despite delays, Apple is working actively on in-house solutions to enhance Siri’s conversational capabilities and eliminate reliance on third-party AI providers in the long run.