Pokemon TCG: Sword & Shield 3-Pack Booster - Rules of Play says:
Welcome to the Galar region. Meet more than a dozen powerful new Pokemon V, including the Legendary Zacian and Zamazenta—and some, like Stonjourner and Snorlax, that can evolve into enormous Pokemon VMAX for even more power. You’ll also find first partners Grookey, Scorbunny, and Sobble, little cuties like Wooloo and Yamper, and a handful of familiar Pokemon in their new Galarian forms. Catch up with a new generation in the Pokemon TCG: Sword and Shield expansion. Customers will receive one Pokemon TCG: Sword and Shield Triple Booster at random.