This question is way too narrow.
If we assume Apple has a 4-5 year road map laid out, like most companies, and knowing that Apple launches a major iOS upgrade with each new iPhone generation, then it's conceivable he had some discussions about it. As for input on the design language, I highly doubt that.
If we assume Apple has a 4-5 year road map laid out, like most companies, and knowing that Apple launches a major iOS upgrade with each new iPhone generation, then it's conceivable he had some discussions about it. As for input on the design language, I highly doubt that.