https://arstechnica.com/gadgets/2024/07/you-can-now-try-apple-intelligence-in-the-ios-macos-developer-beta/

As was just rumored, the iOS 18.1, iPadOS 18.1, and macOS Sequoia 15.1 developer betas are rolling out today, and they include the first opportunity to try out Apple Intelligence, the company's suite of generative AI features.

Initially announced for iOS 18, Apple Intelligence is expected to launch for the public this fall. Typically, Apple also releases a public beta (the developer one requires a developer account) for new OS updates, but it hasn't announced any specifics about that just yet.