Apple(US:AAPL) Huan Qiu Wang Zi Xun·2025-08-20 04:54Core Insights - Apple has released the fourth public beta of watchOS 26, which includes redesigned blood oxygen monitoring features for the Apple Watch Series 9, Series 10, and Ultra 2 models in the U.S. market [1] - Due to legal issues, the blood oxygen sensing feature will be disabled in the U.S. starting January 2024, but Apple has managed to restore this functionality through operational adjustments [1] - Previously unsupported Apple Watch models can now read blood oxygen data, with all calculations and results viewable on the iPhone [1] - The watchOS 26 update introduces additional features such as Workout Buddy to motivate users to exercise, a redesigned workout app interface, real-time translation in the information app, and enhanced smart reply capabilities [1][2] Release Information - watchOS 26 is set to be officially launched to the public in the fall of this year [2]