IPUMS previous versions and release dates

Is there an available list of previous IPUMS versions and their release dates? I know that the current version is 6.0 and that version 5.0 was released in 2010. Were there additional versions released between those dates?

Thank you.

IPUMS-USA releases new data and corrections multiple times each year, though each release is not currently assigned a unique version number. A detailed history of revisions made to IPUMS-USA can be found on our Errata and Revisions page.

Hope this helps.