The W3C Director today advanced the status of MathML3 from Working Draft to Candidate Recommendation (CR). That means that W3C is now asking people to not only send comments on the text, but to implement the specification and send feedback on any problems found in actual use. The MathML for CSS profile, which describes a subset of MathML3 that can be rendered with existing CSS renderers, was advanced to CR at the same time. The next step for both specifications is PR, as soon as there are sufficiently many implementations. The working group expects to start testing implementations around March 2010. Feedback can be sent to the mailing list.