Dubbing and Audio description Profiles of TTML2 publication history Date Status 12 April 2024 Working Draft 28 March 2024 Working Draft 1 March 2024 Working Draft 15 February 2024 Working Draft 13 February 2024 Working Draft 8 February 2024 Working Draft 21 December 2023 Working Draft 23 November 2023 Working Draft 2 November 2023 Working Draft 19 October 2023 Working Draft 13 October 2023 Working Draft 11 October 2023 Working Draft 6 October 2023 Working Draft 1 August 2023 Working Draft 27 July 2023 Working Draft 28 June 2023 Working Draft 19 June 2023 Working Draft 6 June 2023 Working Draft 5 May 2023 Working Draft 4 May 2023 Working Draft 25 April 2023 First Public Working Draft