See also the history of the other specifications of the series: ttml-imsc1, ttml-imsc1.1 and ttml-imsc1.2
2018-04-24 | TTML Profiles for Internet Media Subtitles and Captions 1.0.1 (IMSC1) Recommendation |
2018-02-27 | Proposed Recommendation |
2017-07-13 | Candidate Recommendation Snapshot |
2017-03-22 | Working Draft |
2017-02-02 | First Public Working Draft |