You won't have to pick up Apple Watch Series 2 to see a tangible improvement to your wristwear -- Apple has revealed that its watchOS 3 update will reach original Apple Watch models on September 13th. As promised, speed is the focus. The new watchOS holds favorite apps in memory to shrink loading times, and the side button now gives you fast access to those faves instead of bringing up the (frankly, seldom used) contact wheel. And if you'll recall, this is just the start. There are quite a few interface and fitness tweaks that should make your first-run smartwatch feel fresh.