As expected, a new event has already begun in the Wild Area of Pokémon Sword and Shield. This includes updated Gigamax forms, which may appear more frequently.
The outstanding Gigamax forms of this season are Snorlax, Machamp and Gengar and all three can appear in both Sword and Shield. Toxtricity, Grimmsnarl, Hatterene, Kingler and Orbeetle have left the raids highlighted as of today and may return in the future. You have more statistics about the Pokémon that currently appear in this link
For now it has not been shared until how long this season lasts, so we will be attentive to more details. In the meantime, What do you think of these additions?