Pokémon TCG Pocket: A Brand-New Series Is Coming in October — Dual-Type Cards and Mega Mewtwo X ex Headline the C1 Expansion

Pokémon TCG Pocket has moved at a relentless pace since launch, dropping a new expansion roughly every month. But October 2026 is not just another monthly drop — it marks the beginning of a brand-new series, expected to carry the card code C1, which means the game is turning a significant page for collectors and competitive players alike.

A New Series Begins

The October expansion was announced at the Pokémon XP event, and it is set to introduce mechanics and card types that have never appeared in Pocket before. Most notably, the upcoming set will introduce Pokémon cards with two types simultaneously — meaning a single card can carry, for example, both Psychic and Fighting energy identities at once.

The poster child for this new mechanic is Mega Mewtwo X ex, which is confirmed as both a Psychic-type and a Fighting-type. That dual classification is more than a cosmetic change: it means Mega Mewtwo X ex can benefit from Stadium cards and Supporter cards that reference either type. Peculiar Plaza and Arena of Antiquity both apply, as do Supporters like Diantha and Korrina — giving deck-builders far more flexibility when constructing synergy-driven builds.

The expansion also brings new Basic Pokémon ex cards to the game, following the template set by cards like Pikachu ex — powerful Pokémon that are usually played as pre-evolutions, reimagined here as standalone ex cards.

What the C Series Means for Your Collection

The shift from the B Series to the C Series is a meaningful one for collectors. The Team Rocket's Ambition expansion that launched on 26 August 2026 is expected to be the last set in the B Series, making it the final chapter of that card pool. If you have been working through the B Series card dex — tracking down B Series parallels, full-art cards, or immersive arts — now is the time to finish that goal before the game's focus moves on.

For the competitive side, Pokémon TCG Pocket operates a rotation system, and a new series typically signals a shift in which cards remain legal at the top tables. Although The Pokémon Company International has not yet published the specific rotation rules for the C Series, players would be wise to keep an eye on official announcements in the coming weeks.

What to Expect When It Drops

An exact date within October has not been confirmed at the time of writing, but given Pocket's consistent monthly cadence — expansions have landed in the final week of each month throughout 2026 — a late-October release seems most likely. Pokémon TCG Pocket is free to download on iOS and Android globally, so UK players will have access on day one, just as they have with every previous expansion.

The dual-type mechanic is the most structurally significant addition the game has seen since the introduction of Ancient and Future categories in Paradox Drive earlier this year. Whether it fundamentally reshapes the meta or simply adds a new dimension to a handful of chase cards, it gives collectors something genuinely new to pull for — and that is always welcome.

Keep an eye on TCG Listing for pull-rate analysis, deck ideas built around Mega Mewtwo X ex, and a full breakdown of the C1 card list as reveals continue ahead of the October launch.