Apple for it's iPhone 16 series used the tag line "built for Apple Intelligence" last year. But these words still needs time atleast till 2027 to be fulfilled according to the claims by Mark Gurman, the company's insider.
More about Apple Intelligence

Apple Intelligence faces criticism every now and then and remains a controversial subject. The company is still lacking behind than the other tech giants in the field of AI. The AI features those the company uses for marketing their devices still remains incomplete and the ones available fails to match up the high AI functioning by the other tech giants in the market.
The company's claims to provide a much better and smarter version of Siri is still facing delays. Users are pathetically upset for this. The company was even sued with the charge of false advertisement. This creates a state of panic within the company and the officials take personal accountability for this as well.
Other Intelligence Plan by the Company

The tech company is seriously looking forward to develop new AI features for the iOS devices. Rumours claim about the company thinking to partner with Google for having their AI system Gemini.
What's in Store for 2027?
The two major AI applications the company is currently improving are to arrive not before 2027. First one as Gurman claims is Siri. Developers of the company are trying to shift Siri to the Large Language Models (LLM). iPhone users are waiting for this since the launch of iPhone 16.
The company was to solve this problem with the launch of iPhone 17 but now things seem different as per Gurman's words. This experiment is still going on and might need more time to resolve which drags the wait of the iPhone users till 2027. Well working this slow brings in a bad name for the tech company.

The tech giant also looks forward to use stronger chips for their AI servers. This definitely will bring better functionality but for this to happen forst the AI features must be complete. On comparison, both Samsung and Google remains ahead of Apple in terms of the AI tools as they already have their AI features complete.
Brands like Huawei and Xiaomi are also featuring complete and powerful AI features in their devices.
What for 2027?
Well the year 2027 marks the 20th Anniversary of the iOS company. It has bigger launches in it's bucket first is the iPhone fold handset and second will be their glass model of iPhone Pro. So, by 2027 people will be much more driven towards their designs rather than the AI features for their iPhones.