The Protocols and Formats Working Group has published Updated Working Drafts of Accessible Rich Internet Applications (WAI-ARIA) 1.1, Core Accessibility API Mappings (Core-AAM) 1.1, and Accessible Name and Description: Computation and API Mappings 1.1 (AccName-AAM).
WAI-ARIA provides an ontology of roles, states, and properties that define accessible user interface elements. It is designed to improve the accessibility and interoperability of web content, particularly web applications.
Core-AAM describes how user agents should expose semantics of content languages to accessibility APIs across multiple content technologies (including much of WAI-ARIA), and serves as the basis for other specifications to extend the mappings to specific technologies.
AccName-AAM describes how user agents determine names and descriptions of accessible objects from web content languages and expose them in accessibility APIs.