According to Pokémon card outlet PokéBeach, Lost Origin's release date is unusual and normally would have come out in August.

Interestingly, the release date of the Lost Origin expansion in September has some fans theorizing that the TCG could be aiming for its first simultaneous worldwide launch in December. If The Pokémon Company sticks to its past release formats, then the Pokémon Scarlet and Violet TCG will be available first in Japan around December 2022. Based on previous launch cycles, it seems that the Pokémon Scarlet and Violet TCG series will likely release in early February 2023. The last time the Pokémon TCG deviated from this release schedule, was with the Gen 5 Pokémon Black and White RPGs release, which was in March 2011.