I really don't expect a company like Apple to be asleep at the wheel on this. Especially with Apple having Siri launched as far back as 2011. Are we expecting some significant improvements in Siri?
For Siri specifically, Apple has to be extremely careful. Their carefully crafted public relations could shatter in an instant of their LLM spits out crazy answers like Bing's chatbot.
Apple makes heavy use of the neural engine hardware in their software. Computational photography, searching photos by subject, facial recognition, AR, translation, lots of stuff.