When was contingent worker supplement data (1995 and 2005) added to IPUMS-CPS? I can't find that information.

I want to use Contingent worker supplement data (1995 and 2005) in a longitudinal fashion for my research but can’t find information on when these data were added. I also wonder when new Contingent worker supplement data (2017) will be added.

It looks like the 2017 Contingent Worker Supplement is being fielded in May 2017 (now!). It typically takes the BLS several months to a year to release supplement data. Once this data becomes available, however, the IPUMS CPS team will make it a priority to release this data (along with the 1995 and 2005 samples) as soon as possible.