Where it comes from
2026 Pokémon TCG Standard Format Rotation Announcement The Pokémon Company International (pokemon.com) · 9 January 2026 Open the original ↗
The line in the source
"For in-person Play! Pokémon events, the Standard format rotation will go into effect on April 10, 2026." / "Cards with the “G” regulation mark will no longer be legal for play in the 2026 Standard format."