Having played with watchOS 3 for several hours, some thoughts.... Amazingly both iOS 10 and watch OS 3 are working well enough (SO FAR) for me to use for daily use. I was going to just test, but just one springboard crash on the iPhone and battery life on both is great. (YMMV) Lots of stutter here and there, and some rough edges, but totally worth it and way better than I expected for a first beta. Dock at last, Dock at last, Dock Almighty, Dock at last! With button and wheel to scroll between apps - heaven. Apple promising fast app loading is a little bit deceptive. Loading times are the same, but the awesome Dock keeps up to 10 pinned apps open in memory, plus one Recent. 10 apps pinned in Dock + 1 recent in Dock for total 11 + potentially 5 more from complications on Watch face After that you are back to slow load times for apps you run more rarely, but hey, what a great solution - the improvement is like a new watch. Now I can keep Philips Hue pinned for adjusting lights. Early testing shows that with 10 apps pinned in Dock, RAM seems to be an issue, and the Watch struggles to keep all loaded. With 10 in the Dock and recently active, launching apps like Just Press Record from a complication was back to 10-15 seconds. Early days - I am amazed how nearly every app works. Full screen swiping to change Watch faces is almost unusable at this stage. Patience Grasshopper. Scribble to text is AMAZING. Game changer. Find my Friends not working yet, nor Now Playing music controller. Summary: So this is 10 steps forward, 2 steps back, but absolutely revolutionizes the usefulness of the Watch. I could not be happier.