Update: Yahoo emailed me to say this is only being offered in Europe right now.
Yahoo is launching a separate content platform, according to the email I received earlier today.
The email states:
In the next coming months, Yahoo! Search Marketing will introduce a new serving platform for Content Match. This new platform is designed to improve listing relevance, power the Yahoo! Search Marketing Distribution Network, and improve the end-user experience.Save up to $400! Register now for SES New York 2012, the Leading Search & Social Marketing Event, taking place March 19-23. Google's Digital Marketing Evangelist Avinash Kaushik will keynote. Hurry, pre-agenda rate expires March 2!The new Content Match platform includes an improved matching algorithm and real-time optimization that, in addition to bid, will consider additional relevancy factors like keywords, title and description to determine your listing position.

