Dubbing and Audio description Profiles of TTML2 publication history Date Status 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