The Office for National Statistics ran a series of roadshows in April 2012 looking at 2011 Census outputs and web dissemination. The slides available here provide a summary of progress to date, data quality, planned outputs and how the results will be dissemination.
The first outputs from the 2011 Census will be the population estimates by age and sex for England and Wales and local authorities. Further details on the content and timetable for each of the census releases, as well as the availability of the commissioned table service and UK data, have been made available through an online Census Outputs Prospectus.