A new trailer has been released for the Pokémon Scarlet/Violet expansion, The Hidden Treasure of Area Zero
. Not much new information is given, however we do see Okidogi, Munkidori, and Fezandipiti natively in-game.
The first part, The Teal Mask introduces us to two trainers Carmine and Kieran in the new region of Kitakami. There is a Festival of Masks
going on. The second part, The Indigo Disk, sees you visit Blueberry Academy, which appears to feature a large battle arena known as a Terarium
.