I've noticed that Siri got more human like articulation and verbal traits after the pubic release of iOS10. I had the gold master but after iOS 10 went live, Apple must have updated Siri to its next generation voice synthesis. For example, she sometimes laughs or giggles. She did it before but now it doesn't sound like uncanny valley. It really does sound humanlike. Her "oh" isn't a literal read of "oh", more like an actual human expression of surprise. Try this: "Hey Siri, laugh" ... She actually laughs! Even though the screen reads "ha, ha", her laugh has a very human like breath to it. If you keep repeating "laugh", she'll eventually say: "I'm glad you think it's funny" with an intonation of laughter in her voice. This one blew my mind! Anybody notice these traits?