The latest updates bring changes to the Sleep Score feature on Apple Watch.
The feature, introduced in watchOS 26, assesses sleep quality based on duration, bedtime, and interruptions.
The updates tweak the labeling for point ranges to better reflect how people feel after a restless night's sleep.
The "Very High" rank was previously labeled as "Excellent", and five or six hours of restless sleep can still earn a "High" score.
Apple changed the name to be more in line with the other labels.
Author's summary: Updates improve sleep score accuracy.