Apple Intelligence not appearing on iPhone 15 Pro after latest iOS update

Open the Settings App > General > About > Model - does it end in CH/A? If yes, your phone was manufactured for a China Market and isn't eligible for Apple Intelligence, regardless of where in the world you are.

If that's not the issue, go through this link and make sure you have set the language on your iPhone AND the Siri language to the same language, which must also be a supported language --> How to get Apple Intelligence - Apple Support (CA)

AzzoElabbar wrote:

Yes, my model ends with CH/A, which I now understand means it was manufactured for the China market. So, even though I’m not in China, Apple Intelligence isn’t available for my device.

Is there any official timeline or confirmation from Apple on whether support for CH/A models will be added later? Or is this a permanent restriction?

This is a user to user only forum, which Apple doesn't participate. And Apple has not suggested, when or IF, China Market phones will get Apple Intelligence. If you read the link I provided, Apple's statement about China Market, is all anyone here or at Apple will be able to provide you.