Apple took the wraps off watchOS 4 today during its WWDC Keynote, with VP of Technology Kevin Lynch demonstrating several new features in the next major update to Apple’s wearable device. watchOS 4 will add several new Watch Faces, most notably a proactive “Siri Face” that will provide a display of relevant information throughout the day, similar to the “Proactive Assistant” introduced in iOS 9 two years ago. For example,…