Pokémon Sword and Shield was updated to version 1.3.2 on Nintendo Switch. You can have a look at the complete patch notes for this update.
This patch only fixes an issue where some Pokémon icons were not displaying properly in the online or local wireless battles. Other changes that are mentioned simply state that there are several fixes to improve the gameplay experience without heading deeper into what actually is fixed or improved by the developers. Regardless, you can have a look at the Pokémon Sword and Shied update 1.3.2 patch notes that were shared by Nintendo below.
Pokémon Sword and Shield Update 1.3.2 Patch Notes
- Fixed the issue where some Pokémon icons were not properly displaying during online or local wireless battles.
- Several issues have been fixed to improve gameplay experience.