Tomorrow could be Apple's most important AI moment yet.

WWDC 2026 is expected to be all about one thing： making Siri relevant again.

If the leaks are right， Apple is rebuilding Siri around a custom Google Gemini model， reportedly around 1.2 trillion parameters.

For context： Apple's own on-device AI model is roughly 3B parameters.

The biggest rumor： Apple's new Siri will reportedly be powered in the background by Google Gemini.

Not as a Google-branded chatbot， but as an Apple-controlled intelligence layer running behind Siri， likely tied to Apple's privacy-first infrastructure.

So the new Siri likely becomes a hybrid system：

• small Apple model locally on your device • large Gemini-class model in the cloud • Siri as the orchestration layer • Apple controlling the UI， app access and privacy layer

What to further expect：

• a much more conversational Siri • deeper personal context across apps， messages， files， calendar， photos and contacts • screen awareness • actions inside apps • a dedicated Siri app with chat history • voice chat， file uploads and multimodal interaction • better integration with Dynamic Island • optional support for other AI services like ChatGPT， Claude or Gemini

Apple wants to turn Siri into the private AI layer of the operating system.

A system agent that can search， understand， write， edit， summarize， organize and act across your iPhone， Mac and iPad.

We may also see new Apple Intelligence features for：

• AI photo editing • smarter Camera / Visual Intelligence • improved Writing Tools • natural-language Shortcuts • better Wallet and Health integrations • more privacy controls around AI data

Either way， WWDC 2026 could define Apple's position in the AI race.