I should mention that I’m in the prime demographic for whatever Apple does end up putting out. I could care less about the time, but I do currently have a Fitbit Flex wrist strap for step tracking, and a TomTom Runner GPS watch for my runs, which I pair with a Polar Bluetooth heart rate monitor. So, yeah, I’ll be all over something like this, especially since I always carry my phone with my on runs for music playing, and I’m fascinated by the quantified self movement.
Screw the timekeeping, tell me more about what my hydration, O2 saturation, blood glucose, and stride rate are! If Apple can sell me something packed full of cool sensors, I’ll buy one immediately and I’ll be thinking, “That Polar HR monitor’s chest strap has irritated my ribcage for the last time!”
Oh, and if it helps me from missing the notifications from my phone, all the better. I’m of the type that always keeps my phone on silent, and I rely on the buzzing to alert me. I’d say I miss about 15 - 20% of the calls / texts I wish I hadn’t in any given week.