According to Tim Cook (@tim_cook), Apple has introduced two new AI-driven features to the Apple Watch: hypertension detection and sleep score. The hypertension detection uses AI algorithms to analyze long-term health data and notifies users if signs of high blood pressure are detected, offering a proactive approach to cardiovascular health management. The new sleep score feature leverages machine learning to provide deeper insights into sleep quality, helping users make informed decisions about their health. These advancements position Apple Watch as a leading wearable AI health device, opening new business opportunities in digital health monitoring and preventive healthcare (source: Tim Cook, Twitter).