We have added the new 3-year period estimates data within the /pub/data/acs2010 data directory. The usmcdcprofiles3yr data set has profile data for the entire country. The more detailed base tables are stored under the basetbls subdirectory and we have followed our usual naming convention of identifying these summary data sets by the inclusion of the string "3yr" in their names. Coding to create these datasets done by Billy Earney. But this announcement is by me.
Working on a custom app that should make access to these valuable data resources much simpler.