I'm not comfortable yet installing the iOS beta on my iPhone 15 - is it possible to play with Apple Intelligence in the simulator, or is it on-device only?
Apple Intelligence in the simulator?
It seems to be on-device only but if you have an Apple silicon Mac, you can create a partition and install Sequoia 15.1 there, then use Xcode 16.1 to build to "Mac - Designed for iPad" (so, Catalyst) and you'll then see at least Writing Tools if you have Apple Intelligence enabled in System Settings. And you can also try out Writing Tools from Safari and Notes and presumably other apps on Sequoia.