Knowing Apple, it is likely to only work on certain devices, especially if they are aiming to be on device, as is their preference for privacy and likely latency reasons, so it will likely be Siri Pro or Siri+
This comment has interesting timing for me -- in the past few days, I've heard two entities (including the company I work for) express that they want to avoid using the term "AI" publicly because they fear that the term is starting to turn people off.