No Apple Intelligence features are available for testing, but within Xcode, there are two images showing what its Settings will look like.
Apple Intelligence in iOS Settings
Apple Intelligence in iOS Settings
The images were found inside the latest developer beta releases. In the macOS Sequoia beta, Xcode includes the ability to preview what an app will look like on an iPhone — and now that simulator includes references to Apple Intelligence.
Specifically, two images have been found by Matthew Rodarmel on Twitter/X. They show where Apple Intelligence options will sit within Settings, and then a little further detail about certain options.