Bloomberg's Mark Gurman reports that iOS 28 will be "far more significant" than iOS 27, though he hasn't shared specific details yet. The update carries the codename "Bell" while macOS 18 is reportedly called "Poppy." This early information suggests Apple is already planning substantial changes for next year's release cycle.

iOS 27 appears focused on Siri and Apple Intelligence improvements. The update will reportedly include a long-awaited personalized Siri with on-screen awareness, allowing the assistant to understand personal context from Mail and Messages. A dedicated Siri app will enable back-and-forth conversations in text or voice modes, similar to ChatGPT. Additionally, iOS 27 may add a "Search or Ask" feature to the Dynamic Island.

The most notable detail is that iOS 28 will debut on Apple's rumored 20th-anniversary iPhone, expected in September 2027. This timing suggests the major update is being designed specifically for new hardware rather than just iterative improvements. Apple typically reserves significant changes for milestone releases and new device launches.

With WWDC 2027 still over a year away, this preliminary rumor indicates Apple's roadmap extends beyond immediate Siri enhancements. The combination of anniversary hardware and a reportedly more substantial software update could represent Apple's response to intensifying competition in mobile AI.