From Mark Gurman’s latest, the AI rollout still feels haphazard. ChatGPT may come as soon as 18.2:

Looking further ahead, Apple is already racing to complete a major iOS 18.2 upgrade, which will include features like Genmoji, ChatGPT integration and the Image Playground app. The company is looking to get that release down to zero-bug status in early November so it can ship it by December.

But the new Siri will apparently be later, maybe spread across 18.3 and 18.4 next year.