Re potential features such as blood pressure, there's an ArsTechnica article [1] today that might be useful - if you like Ars, that is.

Headline and sub-head read:

> Report: Big new health features are coming to the Apple Watch—just not this year

> Temperature and blood glucose tracking could arrive as soon as 2022.

Ars refers to the conflicting analyst reports in its intro:

Analysts and reporters have published conflicting reports about what to expect from the next Apple Watch. Some, like Nikkei, claimed it will have new health sensors, but others like Bloomberg's Mark Gurman have said that this year's model will offer no major new hardware features amidst production constraints.

[1] https://arstechnica.com/gadgets/2021/09/report-big-new-healt...