This is Lena Zúñiga, I'm the new project coordinator for the EDGAR Mashup project.   Ian has done a great job starting up this initiative and after a few months of refining the proposal, we're very excited and very proud to announce that we have started the technical development phase of our EDGAR database Mashup project, supported by the Sunlight Foundation.

Our technical team, formed by Skye Bender-DeMoll and Greg Michelec, is now refining a first version of the API.  We expect to have a functioning demo by April this year. 

Update:   Continuing my theme of working backwards and getting things done faster than if I had done them the "right way" here is a tool developed by Joshua Tauberer that exposes the entire SEC EDGAR database in the way we need it exposed, and outputs RDF.  Now it is a matter of linking to this output and creating a visualization.  One more step!