: Prevents and fixes a rare issue where players could not resume their game after saving in certain areas of Lumiose City .

While it didn't add new Pokémon, it was a critical "quality of life" and security update: Pokéball Fixes:

For now, head over to GBAtemp or Project Pokemon to read the technical breakdown. If you’ve been waiting for a reason to replay Pokémon Y — with smoother performance, fewer glitches, and the door wide open for mods — this December 15th gift is for you.

Here’s where it gets exciting. With the decrypted EUR/USA 1.5 update, creators can now: