Iphone16 apple intelligence

The footnote on the Apple Intelligence Preview page is now a bit more detailed than it was a few weeks ago.

Apple Intelligence Preview - Apple

"Apple Intelligence will be available in beta on all iPhone 16 models, 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 an iOS 18, iPadOS 18, and macOS Sequoia update this fall. English (Australia, Canada, New Zealand, South Africa, UK) language support available this December. Some features, additional platforms, and support for additional languages, like Chinese, English (India, Singapore), French, German, Italian, Japanese, Korean, Portuguese, Spanish, Vietnamese, and others, will be coming over the course of the next year."

Apple has made no announcement as to when the beta will first come out, for U.S. English, other than that it will be sometime "this fall".

The new, highlighted statement indicates that they expect to release a version for U.K. English some time between December 1, 2014, and December 31, 2024. (Presumably subject to change.)

Apple has made no announcements so we don’t know.