First, it is important to understand why there have been changes. Public Vocational Rehabilitation programs nationally are funded federally through the Rehabilitation Act of 1973. VR programs also receive about one state dollar for every four federal dollars. Every so often that law is changed/improved or amended.
About a decade ago the Rehabilitation Act was rolled into the larger Workforce Act, then referred to as the Workforce Investment Act (WIA). As of the recent 2014 amendments, the law is now referred to as the Workforce Innovation and Opportunity Act (WIOA). The Rehabilitation Act was reauthorized with WIOA as Title IV of WIOA.