W3C:

2008-05-16: The Cascading Style Sheets (CSS) Working Group has published the Last Call Working Draft of Cascading Style Sheets (CSS) Snapshot 2007. This document collects together into one definition all the specificaitons that together form the current state of Cascading Style Sheets (CSS). The primary audience is CSS implementors, not CSS authors, as this definition includes modules by specification stability, not Web browser adoption rate. Comments are welcome through 09 June. Learn more about the Style Activity. (Permalink)