Apple recently confirmed that it bought Inductiv, a machine-learning company based in Canada; the staff from the firm will apparently be working on improving Siri. This is just the latest in a line of acquisitions of AI and machine-learning companies that Apple has bought over the last few years, many of which likely had the company's voice assistant in mind.
The future can't come too soon.
Way back in 2015, before Apple's annual September event, I put forth that what Apple's Siri (then a mere four years old) needed was a major "2.0" push, taking a hard look at the virtual agent from the ground up.