Macworld With just hours until the Glowtime keynote, some last-minute rumors are filling in some Apple Watch details. According to 9to5Mac, Apple is planning to update the newest watches with all-new sensors. The report claims that Apple is planning “an updated ECG/heart rate sensor that will unlock new features and provide more accurate results” for the Series 10 and Ultra 3. Among the new features will be sleep apnea detection, which will be exclusive to the new watches. A previous report from Mark Gurman of Bloomberg claimed that sleep apnea detection will be billed as a major new feature b…