I heard rumors of the iWatch from Apple. I don't think iWatch will sell with the aging population of baby boomers. First of all, you'll need tri-focal glasses to read the tiny screen. The screen on the iPhone is already too small for oldsters. Instead of trying to be cool, why doesn't Microsoft design a wearable computer for the aging population? How about a blood pressure monitor built into the device? How about an programable alarm/timer to remind the wearer to take his/her medications? How about a talking calendar to remind the user of doctor's appointments? A wearable medical computer for seniors would be more useful and Microsoft might get some kind of tax credit for producing it.
First, the iWatch won't be aimed only at baby-boomers. Digital watches have been popular for decades, so an iWatch would be a natural evolution for all ages. And it's just one more trend that Microsoft will miss out on, if it goes true to form.
Depending on how broadly one defines both "wearable" and "computer", the first wearable computer could be as early as the first abacus on a string, worn around the neck, or, later, a 16th century abacus ring.