Apple has released watchOS 26.2, which comes with a refined Sleep Score classification and an updated score range. Here's what the updated Sleep Score classification with the new score range looks like: Very Low (0-40), Low (41-60), OK (61-80), High (81-95), and Very High (96-100). In addition to the new Sleep Score classification, watchOS 26.2 comes with "Enhanced Safety Alerts," which can notify users of imminent threats such as natural disasters, floods, and other emergencies.