Apple Delays Siri Overhaul Again: iOS 26.4 Falls Short

Another Delay for Apple's Most Ambitious Siri Redesign

Apple's long-awaited Siri overhaul has hit another wall. The company has confirmed that three flagship features — Personal Context, In-app Actions, and On-screen Awareness — will not be part of iOS 26.4, the software update originally expected to bring a dramatically smarter Siri to iPhones this March. Some features have been pushed to iOS 26.5, planned for May, while others may not arrive until iOS 27 in September 2026, according to reporting by MacRumors.

The delay is the latest in a string of missed targets for Apple Intelligence's Siri component. Apple first unveiled its AI ambitions at WWDC 2024, promising a context-aware assistant by spring 2025. That deadline slipped, then again — and now iOS 26.4 joins the list of updates that fell short of expectations.

What Went Wrong

Internal testing revealed that the new Siri struggled with reliability in ways Apple considered unacceptable for a mass rollout. The assistant occasionally failed to process queries correctly, exhibited excessive response latency, and in some cases defaulted to ChatGPT even when it should have handled requests independently. According to MacRumors, engineers flagged accuracy inconsistencies and instability that made the product unfit for public release at scale.

Apple, for its part, has pushed back against characterizations of a collapse. The company told CNBC that the revamped Siri remains "on track" for a 2026 release — framing the situation as a phased rollout rather than a failure.

The Google Gambit

Perhaps the most striking element of the Siri story is who is actually powering it. Apple has partnered with Google to use Gemini models as the AI backbone for the new Siri — a deal reportedly worth approximately $1 billion per year, according to TechCrunch. The arrangement will be entirely white-labeled: from the user's perspective, it will still be Siri, with no Google branding in sight.

The strategic pivot is significant. Rather than continuing to develop a fully proprietary large language model for Siri, Apple has chosen to license external technology — a move that underscores both the difficulty of building competitive AI at scale and the pressure the company faces to catch up with rivals.

Falling Behind the Competition

While Apple has stumbled, competitors have not stood still. Amazon relaunched Alexa Plus powered by Anthropic's Claude, enabling multi-step reasoning and complex task execution. Google's own Assistant has benefited directly from Gemini integration, boasting high accuracy in independent evaluations. Both platforms have demonstrated the kind of fluid, context-aware interactions Apple has been promising but not yet delivering.

"The three incumbents are scrambling to integrate generative AI into their existing voice ecosystems, with mixed results," noted one industry analysis — and Apple, despite its enormous user base, is currently the one scrambling hardest.

What Comes Next

The revised roadmap, as reported by AppleInsider, suggests a gradual feature rollout: some Personal Context and In-app Actions capabilities in iOS 26.5 this May, with a fuller chatbot-style Siri experience targeting iOS 27 in September. iOS 27 is also expected to introduce sustained, back-and-forth conversational interaction — essentially transforming Siri into a ChatGPT-style assistant embedded natively in Apple devices.

For Apple, the stakes are high. Siri has long been the weakest link in its ecosystem, and every delay hands competitors more time to deepen their lead. Whether the Gemini-powered relaunch can restore confidence — and user trust — remains the defining question of Apple's AI strategy in 2026.