The Illinois Information Technology Accessibility Act (IITAA) requires that the State review and update its technical accessibility standards at least once every three years. The original IITAA Standards were published in February 2008, so the first review was due in February 2011.

The State completed its initial review in 2011, concluding that the IITAA Standards should be "harmonized" (aligned) with the World Wide Web Consortium's Web Content Accessibility Guidelines (WCAG) 2.0 and the proposed revisions to Federal Section 508 Standards, as soon as those revisions were complete. The full recommendation is available at IITAA Standards Update Recommendation (2011).

In 2014, the revisions to the Federal Section 508 Standards were still not complete, and the IITAA Standards Update Workgroup opted to continue with its 2011 recommendation to harmonize with the revised Section 508 Standards as soon as they were complete.

On January 9, 2017, the U.S. Access Board released the final rule updating the Section 508 Standards and harmonizing them with the World Wide Web Consortium's Web Content Accessibility Guidelines (WCAG) 2.0, with an effective date of January 18, 2018. In accordance with the IITAA Standards Update Workgroup recommendation, the State immediately began the process of updating the IITAA Standards to match.

On July 18, 2017, the IITAA Standards Update Workgroup completed and published updated standards that harmonize Illinois' requirements with the revised Federal Section 508 Standards and the World Wide Web Consortium's Web Content Accessibility Guidelines (WCAG) 2.0. Following the 2011 recommendation, the Workgroup also developed a set of "Techniques" to provide easy-to-understand instructions on how to meet IITAA Standards. The updated IITAA Standards and Techniques are available at:

In accordance with the Act, and in coordination with the revised Section 508 Standards, the updated IITAA Standards apply to information technology developed, procured, or substantially modified by the State effective January 18, 2018.