No one knows how Healthbook will look until it's released, all he really seems to be going on is how Passbook looks.
He doesn't get his information from Apple, it gets it from people in the supply chain, possibly people who have worked on the project, even then the detail software wise are vague.
He doesn't know for sure whats going to happen at WWDC, he might have an idea but thats all he has. If the people who leaked this supposed video of the conference test run had sold the video to him and 9-5Mac then I'm sure he would be up there now claiming that the iPhone 6 is being announced on Monday.
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I'm not lashing out at him, I'm just say that he's just as clueless as us. I'm not saying the iPhone 6 is or isn't going to be announced on Monday, just saying that what he says should be taken with a pinch of salt.