Google's Matt Cutts revealed in a Q&A at SMX Advanced on Tuesday night that Google is rolling out a test of a "structured data dashboard," according to Search Engine Land. Barry Schwartz writes that he announced "a new beta application is testing within Google Webmaster Tools named the Structured Data Dashboard".
Search Engine Land provides a link the an application for those who want to test the new tool. It appears that the test is just for "structured data error reporting".
Presumably, this is part of the dashboard announced last year.
A couple weeks ago, Google launched some new tools for webmasters to provide it with structured data from their sites. They added support for new types of data with the Data Highlighter and launched the Structured Data Markup Helper.