- This version contains different adjustments for the Pokémon, including the addition of some brand-new actions.
- Other adjustments have been made to make for a more pleasant gaming experience.
- This update must be applied in order to use the game’s Internet features.
- Save data will still be available for use after downloading the update.
- If the system is connected to the Internet, the update will download and install automatically.
- Once you have updated the game, you will not be able to play back replay data from a previous version.
Source: Nintendo Support