Investopedia's Caleb Silver talks about Apple's (AAPL) Siri AI updates as WWDC 2026 comes to a close. The Mag 7 company's software updates are what Caleb believes will be the most important initiative for Apple as current CEO Tim Cook passes his seat to John Ternus. He offers a full picture perspective on Siri expectations, along with the hits and misses he took note of at WWDC 2026.