SSML 1.1 was published as a Proposed Recommendation.

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SSML 1.1 enhances SSML 1.0 with features designed to improve usability of SSML for a broader set of human languages than SSML 1.0 addressed.

Changes include:

- better author control over language/alphabet used to write pronunciations (e.g. pinyin for Mandarin Chinese)

- more precise author control over voice selection

- better author control over behavior on voice selection failure

- better author control over behavior upon text language change

- support for non-whitespace word/token boundaries

- new trimming, speed and volume controls for recorded audio

- better author control over lexicon activation

- added maxage and maxstale attributes for and

The specification is available at http://www.w3.org/TR/2010/PR-speech-synthesis11-20100223/