Numeric font weights now render bold
Template text styled with a numeric weight such as font-weight 600 or 700 was coming out in the regular face. It now renders bold, so run your template again.
If your template set "font-weight": 700 or "font-weight": 600, that text came out in the regular weight with no error or warning. Any weight of 600 or more now renders bold, the same as "font-weight": "bold". Lighter numeric weights stay regular.
Run your template again to pick this up. Bold text is wider than regular, so a line that only just fitted may now wrap, and a tightly filled page may flow differently. It is worth a look if your layout has very little room to spare.
This also fixes the Modern Certificate library template, whose recipient name, signatures and seal motto were drawn in a substitute font.
The documented values are still "normal", "semibold" and "bold". See the template DSL guide for styling.