Huawei has confirmed that it will announce the Watch D later this month, just two days before Christmas. The company has confirmed that the smartwatch has received Class II medical device certification, necessary for it to take ECGs and blood pressure readings.
https://www.notebookcheck.net/Huawei-Watch-D-official-teaser-confirms-Class-II-medical-device-certification-for-blood-pressure-and-ECG-measurements.585103.0.html