In Depth: 10 things we learned from the Apple Watch launch

Pre-orders, apps, Amazon and MacBookApple just held an event for the Apple Watch. But as it launched the thing last year, we got to hear about much more than just a few of the flimsy things Apple's great wrist-worn gadget will do. Yes, we now know when the Watch is coming out, and how much we'll have to pay for it, but there's even more interesting stuff in store too. How about the brand new 12-inch MacBook that's even thinner than the MacBook Air? Or the iPhone-led medical platform that Apple t