I asked a similar question below but want to know when contingent worker supplement data (1995 and 2005) will be added to IPUMS-CPS. I am developing a research proposal and consider using IPUMS-CPS.
Unfortunately, I am currently unable to provide an accurate estimate of when this data will become available on IPUMS CPS. The 2017 sample is still in the field at the moment and it typically takes the BLS several months to make this data available. Once this data has been made available the IPUMS CPS Team will prioritize its release. This release will include the 1995 and 2005 samples as well. I’m sorry I can’t be more specific.