Sure, but they're not all en_US. I've got three on my desk right now*, and I'm in Germany.
* got one of my own right before a previous employer closed down and let us keep the work one, third one is from new employer
* got one of my own right before a previous employer closed down and let us keep the work one, third one is from new employer
(Given how rapidly AI changes, anything more than a year away isn't easily planned for, even assuming no surprises on the anti-trust front for every Big Tech company nor any surprise new legal obligations for AI).
"* Apple Intelligence will be available in beta on iPhone 15 Pro, iPhone 15 Pro Max, and iPad and Mac with M1 and later, with Siri and device language set to U.S. English, as part of iOS 18, iPadOS 18, and macOS Sequoia this fall."