Update now available for Pokemon Omega Ruby and Alpha Sapphire, Pokemon X and Y
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Pokemon Omega Ruby and Alpha Sapphire along with Pokemon X and Y are being updated by Nintendo to fix a few bugs and in-game text.
There's also the possibility of a few hacks and exploits being fixed.
Per Nintendo Life (via Serebii), both patches are 250-270 blocks in size, and it's a mandatory update which means you will not be able to play online until you update.