In case you did not hear about the WWDC15 keynote, Apple announced that  WatchKit is now part of WatchOS2, implemented in the Xcode 7 beta. WatchOS2 has several major differences to WatchKit, most importantly native execution of apps on the watch. For the watchkit lessons I’ve been posting, I’m assuming watchkit 1, and will not yet be using the beta for WatchOS2.  I will explicitly tell you when I use WatchOS2. What you do in these lessons should not be affected by which version you use, except that those using an Xcode7 beta will see faster performance from the watch app. I’ll be posting shortly an explanation of all the differences.