The Department of Health and Human Services recently announced a one-year extension of the compliance dates for web content and mobile app accessibility requirements under Section 504 of the Rehabilitation Act. The requirements themselves are not new in substance: covered recipients of HHS federal financial assistance must make covered web content and mobile apps conform to WCAG 2.1 Level AA. What changed is the timeline. Recipients with 15 or more employees now have until May 11, 2027, and recipients with fewer than 15 employees now have until May 10, 2028.