[Interest] CoreText font rendering changes in 5.9?

[René J. V. Bertin]

Hi,

I know there have been some changes to FreeType font rendering in 5.9 (to use 
stem-darkening). Have there been any changes to the CoreText fontengine too?

Reason for asking:
https://github.com/annulen/webkit/issues/703

Thanks,
R.