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In 2010, the IDPF chartered a working group to update the EPUB specification to more accurately reflect the demands and expectations of a quickly growing marketplace. The specific items to be addressed included: Greater rich media (audio and video) and interactivity support (programmatic content, such as would be needed to implement a quiz or crossword puzzle). Enhanced global language support for the character sets, Ruby markup, and typographic rules needed for reading systems in CJK geographies (including but not limited to special line-breaking rules and vertical writing direction). Enhanced article support in order to support magazines and newspapers. Enhanced metadata support beyond embedded publication metadata. Ability to convey page-level layouts and target multiple display surface sizes in a single publication. Enhanced navigation support. Alignment with broadly-adopted Web standards as implemented by modern browsers. Support for annotation. Native support for mathematics. Support for book-specific structures, such as glossaries, note reference systems and advanced cross-reference systems. Improved accessibility support. Mechanism for adding industry specific extensions in an interoperable manner. Define relationships to approved national and international standards. Define mechanism for including advertising. This paper will discuss those changes and present the author's view on whether the goals set forth by the IDPF were met. The potential impacts on the market from both the publisher and consumer view will also be considered.