Disclaimer: I am an Apple product user. I like my iPhone 5. However, I tried and could not like iOS 7 (my primary iPhone is still on 6, and I'll stick with it for as long as possible), and admittedly for a few years I felt about my iDevices about the same as anything else - they serve the purpose, annoy me sometimes, whatever. Mildly ambivalent.
At the same time, I wasn't too excited about wearable computing. Watch-like devices that came out so far seemed to be trying the form factor without actually having figured out their purpose. They were poor answers to questions no one asked.
Then Apple does this. I have no idea what specifically "this" is but admittedly a "bio-metric" angle is intriguing. I am now somewhat curious and even a little excited to see what they will develop. This may be in part because as I got older, I've got a lot more careful about maintaining my health (whatever is left of it anyway). As part of that quest, I've been through a number of dedicated health-metric devices - and virtually all of them so far came up extremely short in both functionality, usability and integration. In fact, ironically, the most used "health" device is my iPhone which I consistently use for nutrition and fitness tracking.
So - great angle from Apple. Wish I could work on that project :)