The 1940 census records were released by the US National Archives April 2, 2012, and brought online through a partnership with Archives.com. The 1940 Census National Archives site allows you full access to the 1940 census images, in addition to 1940 census maps and descriptions. Visit the National Archives site for more details at: http://1940census.archives.gov/
1940 Census Video from National Archives
Additional Resources on the 1940 Census