The Pokémon Company International has announced that the Pokémon TCG Online game is getting a huge update on November 4th, 2015 which will include cards from the XY BREAKthrough expansion set.

The Pokémon TCG Online Is Getting a Huge Update, Coming Nov. 4th!

Experience an enhanced gameplay experience with new graphics, animations, and much more soon in the Pokémon TCG Online.

The Pokémon TCG Online is about to go get one of its biggest updates ever! Virtually every bit of the Pokémon TCG Online match experience is being improved, including better in-game graphics and animations, added functionality, and new music. This latest update will also include every card from the new Pokémon TCG: XY—BREAKthrough expansion, including powerful new Pokémon BREAK cards!

Next Client Version 2.32

The next major game update, version 2.32, will come out on November 4th. This version will include support for the exciting new expansion XY - BREAKthrough.

XY Basic Theme Deck Balance

In version 2.32 we also plan to make some balance changes to the XY Basic Blue, XY Basic Red and XY Basic Green theme decks that were introduced in version 2.31. Currently, these decks are a little too good, when compared with other available theme decks. The planned changes will pull their relative power back some. Look for details in the 2.32 patch notes when that version goes live.

Unlimited Tournaments Suspended

With the Shiftry turn 1 win currently an issue with Unlimited game play, we have suspended Tournaments in that format until a deeper resolution to that issue can be put in place. Simply banning the card from Unlimited is not planned, since the card is still available from boosters and there needs to be somewhere that the card is valid. Thanks in advance for your patience while a comprehensive solution is implemented.

Sources: http://forums.pokemontcg.com/topic/34353-in-development-xy-basic-decks-xy-breakthrough-more/ and http://forums.pokemontcg.com/topic/34874-the-pok%C3%A9mon-tcg-online-is-getting-a-huge-update-coming-nov-4th/#entry414959