Apple today previewed watchOS 11, with features for Apple Watch that build on its leading sensor technology, advanced algorithms, and science-based approach to offer breakthrough insights into users’ health and fitness, and more personalization than ever. The new Vitals app surfaces key health metrics and context to help users make more informed day-to-day decisions, and the ability to measure training load offers a game-changing new experience when working out for improved fitness and performance. Activity rings are even more customizable, the Smart Stack and Photos face use intelligence to f…