Hi!
I believe that Apple Intelligence is available EU-wide by now, at least I'm in The Netherlands, and I can use the features on my M1 Mac. I don't know of any API for apple intelligence though, I don't think it was ever mentioned. It's integrated with Siri and all places you can write through Writing Tools in the context menu.
I also don't think you can specifically use Apple Intelligence within your app, at least for now. Get the macOS 15.1/iOS 18.1/iPadOS 18.1 updates on a device with M1 or newer CPU, or an iPhone 16 and it should appear in the settings.
Rachee
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