Tokyo Auto Salon is this weekend in Chiba.
Honda will announce their full range of racing activities, including Super GT, Friday at 9 AM GMT:
https://www.youtube.com/watch?v=a5uHgQwBlDo
BMW Team Studie (x CSL) will also announce their 2022 programme, built around the M4 GT3, on 28 January. Bob Suzuki has said that this will be "the most significant change" since their first season as a standalone team in 2014, perhaps teasing a move back to an all-pro driver lineup.