Apple ships long-delayed Siri AI overhaul as Tim Cook announces his retirement

—Apple has finally delivered the Siri AI upgrade it promised nearly a year ago, rolling out a significant makeover to its voice assistant after a string of missed deadlines. The announcement came alongside Apple CEO Tim Cook's disclosure that he plans to retire, marking the end of an era for the company he has led since Steve Jobs's death in 2011. The AI upgrade aims to close the gap between Siri and competing AI assistants from Google and OpenAI.