Pokemon Brilliant Diamond 1.3.0 Update Portable May 2026

: You can now encounter the Mythical Pokémon Arceus. To trigger this, you must have save data for Pokémon Legends: Arceus on your Nintendo Switch that shows you have completed all main missions in that game.

: The update does not add features from Pokémon Platinum (like the Battle Frontier or specific UI improvements), which remains a primary complaint for veteran fans. pokemon brilliant diamond 1.3.0 update