More hints at something is being worked on at the bottom of this link, Still nothing concrete though as to whether it will be built into a new Apple watch or some kind of clip on device to work with existing watches.
http://www.iclarified.com/61086/app...ore-your-medical-records-on-the-iphone-report
http://www.iclarified.com/61086/app...ore-your-medical-records-on-the-iphone-report