He also runs the YouTube channel about Japan stuff called TheDoctorDazza, tweets at @DoctorDazza, and posts photos of his travels on Instagram.
According to the description on the Japanese YouTube page, the presentation will last for around 11 minutes and featuring more information on the DLC and other things.
The presentation roughly coincides with a planned maintenance period for Pokémon Home, which will allow more Pokémon from past games into the Galar region for the first time – without needing the DLC.