This is a page from the Cascading Style Sheets Working Group Blog. Some other places to find information are the “current work” page, the www-style mailing list, the Future of CSS syndicator, and the issue list on Github.
Do you want to know how the CSS WG works? Fantasai has written about:csswg, An Inside View of the CSS Working Group at W3C.
@font-feature-values syntax.font-feature-settings syntax.unrestricted value from text-wrapinter-character instead of bopomofo for ruby-positionhyphenate, don’t add none, to word-wraphyphenation-limit-zone relative to line boxwhite-space-collapsing to bikesheddingFull minutes: CSS3 Fonts, CSS3 Text.