This may be of interest to some:
Yesterday the Census Bureau released the 2010 Demonstration Data Products to help data users understand how differential privacy may or may not impact data products they are used to receiving. The products include the 2010 Demonstration Public Law 94-171 (P.L. 94-171) Redistricting Data Summary File and the Demographic and Housing Demonstration File, which is similar to Summary File 1.
Documentation and resources related to these products are available on the Census Bureau’s website:
The Census Bureau is working on an FAQ document to provide additional information about these data. You can also direct questions to the Census Bureau via email:

Ed Christopher
Transportation Planning Consultant