The third announcement has been made on the ICV7 website for this conference, to be held in Chiang Mai Thailand from May 29 to June 1 2023, organized by the Chaipattana Foundation & the Office of the Royal Development Projects Board (ORDPB). The main theme is Vetiver for Soil and Water Conservation, and the conference will commemorate the very important role that His Majesty King Bhumibol Adulyadej the Great played in the world wide development of the Vetiver Grass Technology and its applications. Specific details under the announcement can be found here. There is no registration fee, nor there are fees for the post conference tour.
I would encourage you to attend this conference, where you can learn about some of the new vetiver research and development that has taken place world wide since ICV6 in 2015.