W3C Invites Implementations of EPUB 3.4, EPUB Reading Systems 3.4 and EPUB Accessibility 1.

EPUB® 3 defines a distribution and interchange format for digital publications and documents. EPUB Reading Systems 3.4: This specification defines the conformance requirements for EPUB 3 reading systems. EPUB Accessibility 1.2: This specification specifies content conformance requirements for verifying the accessibility of EPUB® Publications. https://www.w3.org/news/2026/w3c-invites-implementations-of-epub-3-4-epub-reading-systems-3-4-and-epub-accessibility-1-2/ #EPUB #a11y #WebStandards