For the current relationship of this specification to others, see this specification group: Voice.
| 2004-09-07 | Speech Synthesis Markup Language (SSML) Version 1.0 Recommendation |
| 2004-07-15 | Proposed Recommendation |
| 2003-12-18 | Candidate Recommendation |
| 2002-12-02 | Last Call Working Draft |
| 2002-04-05 | Working Draft |
| 2001-01-03 | Working Draft |
| 2000-08-08 | First Public Draft |