Super excited about WatchOS... not only do I love the deeper integration of the various OS devices with being able to unlock your mac with your watch, and copy and paste across devices, but I *very much* applaud the focus on speed for the watch, without needing new hardware. It looks AWESOME. The one thing I felt the watch's fitness aspect always needed was some social networking, to allow smack talk and such. This is a great, great step, that really should have been there from the get go. I love my watch more now, and building that sense of community is ONLY going to draw in more users. This is a major plus for the future of the watch as a device. Last year the focus seemed to be a bit too much on the watch as a fashion device. This shows that they care about the interface, too.