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.
The Cascading Style Sheets (CSS) Working Group has published a Last Call Working Draft of the CSS Speech Module. The CSS Speech module defines aural CSS properties that enable authors to declaratively control the rendering of documents via speech synthesis. The feature set exposed by this specification is designed to complement the model described by the Speech Synthesis Markup Language (SSML) Version 1.1.
Comments are welcome through 30 September 2011. As always, send feedback to www-style with the spec code
[css3-speech] and your comment topic in the subject line.