Craig stated this in a short time however:
“Apple Intelligence harnesses the facility of our most superior silicon, and might be out there on iPhone 15 Professional, and iPad and Mac with M1 and later. We’re bringing it to customers in beta as a part of iOS 18, iPadOS 18, and macOS Sequioa this fall.”
We’ll in all probability get extra particulars quickly however it sounds such as you have to improve your iPhone to make use of Apple Intelligence (both to the 15 Professional or the upcoming iPhone 16 sequence).