http://www.w3.org/WAI/Overview.html#x20080430a

We are excited to announce that Web Content Accessibility Guidelines 2.0 (WCAG 2.0) was published as a W3C
Candidate Recommendation on 30 April 2008. The Candidate Recommendation stage means that there is broad consensus on the technical content, and W3C invites you to implement WCAG 2.0. Please see additional information in:
WCAG 2.0 Candidate Recommendation Ready to Test Drive; How WAI Develops
Accessibility Guidelines through the W3C Process; Overview of WCAG 2.0 Documents.
If you are interested in sharing implementation experience, please let us know by 23 May 2008.
(2008-04-30)