There are still two really interesting things to these rumors:
1) A hypochondriac like me will buy this the second it comes out. I already have a chest heart rate monitor, a prescription-only pulse oximeter, a glucose meter, a blood pressure machine, and a fancy thermometer. But I was under the impression that I am very, very odd. Apple wants to sell millions of things, not thousands. Who would be interested in this?
2) This device has been claimed to measure heart rate, blood oxygen, glucose, and even blood pressure (not in this report, but in others). The only device on the market that is wrist-exclusive and can accurately measure heart rate in motion is the Mio, which by itself starts at $99. There is no device small enough to be considered a wearable I've ever seen that measures blood pressure. And measuring glucose without taking blood seems like an out there thing. So:
1) Either all these rumors are wrong.
or
2) Apple really has come up with ground-breaking, amazing technology the world has never seen before. They won't come out with something that guesstimates glucose, pulse, or blood pressure. As large as Apple is, any such junky device would be derided in the media and investigated by the government.
So, my conclusion is they've either done something completely new that hasn't been done in healthcare before or these rumors are not true.