The official Japanese Pokémon Trading Card Game website has announced the second Scarlet & Violet TCG expansion which will be released in Japan on April 14th, 2023. The set is called: Snow Hazard (スノーハザード) and Clay Burst (クレイバースト). Cards from Snow Hazard are labeled SV2P while cards from Clay Burst are labeled SV2D on the lower left expansion mark on the card. Booster packs cost 180 yen (tax included) and 5 random cards are included per pack.

Source: https://www.pokemon-card.com/products/sv/sv2.html