The many scientists and mathematicians who work with Help+Manual will love this: The new integrated formula editor is LaTeX-based and includes expression checking. You can build your own formulas directly in the editor with a wide range of selectable element and expression types, or just paste in your own LaTeX formula code.
Equations are exported as inline SVG vector files to HTML-based formats and as SVG with a PNG fallback in Word DOCX output. The quality should be good unless the PNG fallback is required, generally in older versions of Word.
This solves the problem of the missing or incompatible formula editor in MS Office (depending on your Office version), which can no longer be used to insert formulas in Help+Manual projects.