It wasn't mentioned one time. Never in the presentations, none of the talk titles had it included either.
Machine Learning was mentioned and Apple also released many updates related to it, but never did they call it artificially intelligent, or use the phrase artificial intelligence. Not a single time. Go ahead and watch it if you haven't already. They'll never say those words.
Pretty remarkable considering it was a developer conference, I wonder why?
Compare it to Musk who constantly talks up the idea while the actual AI systems his company has deployed are killing people.