Set to launch on April 18th, 2013, (shortly after the Hum. 4 project begins, what good timing!) is the Digital Public Library of America.
The DPLA will serve as a (much-needed) amalgamator of a multitude of freely available, public domain, digital collections (largely from libraries, archives and museums), from digital repositories such as the Smithsonian, the New York Public Library, the National Archives, Harvard University.
Curious? Read more in this Library Journal article by John Palfrey, chair of the DPLA steering committee and current Head of School at Phillips Andover.