On the other hand, the iOS Health app displays sleep metrics, and I don't think Apple would leave the input for those metrics to third-party devices from FitBit and Jawbone.
Actually, Jawbone's UP app can take sleepy tracking data and import it into iOS Health app. They even say so in their app description.
Look unless I actually had access to the highest level of Apple's product timeline, I wouldn't know if this launch date of April 2015 is meeting or lagging their expectations. So I'm doing conjecture. But my conjecture is that Apple wanted this product to launch by March 2015 and that at some point fairly recently they thought it would. If your read is that Apple always wanted and expected an April launch that is fine. But if you are basing this on a belief that Apple can perfectly launch a cutting edge product in a brand new market and that they can predict their ability to go from selling zero product to having millions available and that they can predict the date that they can do that to the month but do that six months away, and that they can do that the vast majority of the times, then I think you over estimate this company.
So, you just admit that you're basing it on made up ideas of a March launch, which you are then peddling as fact. They said Early 2015. If they released in May, even before the Call, where they stated April, then you might actually have a point and we wouldn't have this debate, but they didn't. As many people have stated, Apple clearly have split the year into early/mid/late. These are obviously equal splits, with anything classed as early being released Jan-Apr, and so on. I have always expected the Watch to be out between January and the end of April. If the call had said May, then I'd be saying it's been delayed too. They did the reveal, as they knew that they had a window they would be ready for, with the flexibility that they could release anytime January - April. At the stage they were at, they knew they had a working product to reveal, just like the Original iPhone, they revealed that, but didn't release until 6 months later, pretty much in the same manner as the Apple Watch
I think the launch slipped a month. If in October 2014 they were planning on launching the iWatch in April 2015, then I'm wrong. But I think they thought they were farther along at that point. I think if you had asked Cook in October 2014 when if the Apple Watch would have been launched before April 2015 he would have said yes (setting aside that he would not have told you anything).
Again, you THINK, you do not know. I think that if you asked Cook in October 2014, if they Apple Watch would be launched in March 2015, he would have said no. See how easy that is to say. You are basing your idea of what Tim would say based on your own pre-conceived notion that you think Apple are running behind, your entire opinion is so flawed, that you cannot see how illogical you are sounding.
The facts are simple. Apple have always used early/mid/late, when they have, it's for things released within the 3 separate 4 month periods. Apple have NEVER stated that the Apple Watch was going to be released in March, that's only rumours, the most prominent peddler of the rumour has barely been right. Apple have only ever said 'Early 2015', until the Call, where Tim said April 2015. Additionally, the rumour from March is highly likely to be for the launch event, showing the device off in more detail, with apps from developers and the announcement of the release date and pre-order dates, along with pricing.