DPUB-ARIA and DPUB-AAM are now W3C Recommendations
The Accessible Rich Internet Applications (ARIA) Working Group has published Digital Publishing WAI-ARIA Module 1.1 (DPUB-ARIA) and Digital Publishing Accessibility API Mappings 1.1 (DPUB-AAM) as W3C Recommendations.
DPUB-ARIA defines a set of ARIA roles to help assistive technology users navigate structural divisions of long-form digital documents, such as eBooks.
DPUB-AAM defines how user agents (such as eBook readers) map the DPUB-ARIA markup to platform accessibility APIs.