The Voluntary Product Accessibility Template (VPAT) is the tool vendors use to create Accessibility Conformance Reports (ACR). An ACR provides a report of an ICT item's compliance with Section 508. It is a table that shows all of Section 508's provisions, and whether and how well the product addresses them.
In 2017, the Information Technology Industry Council (ITI) released VPAT 2.0. This update incorporates the refreshed Section 508 ICT accessibility standards and guidelines, which take effect on January 18, 2018. More information about this update can be found at https://section508.gov/refresh-toolkit.