Scarlet & Violet Expansion Pack Battle Partners
(ポケモンカードゲーム スカーレット&バイオレット 拡張パック バトルパートナーズ)
 
This set would launch on January 24, 2025, in Japan with each booster box containing 30 packs.
This is for wave 3 of shipments which will ship out of japan late Feb to early March which will then ship out to you once it arrives.
The set size is unknown for now.
1 Booster box includes 30 packs.