Nintendo has announced that you can now redeem your My Nintendo Platinum Points to collect custom icons based on Detective Pikachu Returns. They will be available until October 26th, 2023 at 6pm PT. Icon elements will be refreshed each week from September 28th, 2023 to October 26th, 2023.

Wave 1: Available September 28th, 2023 to October 5th, 2023
Wave 2: Available October 8th, 2023 to October 12th, 2023
Wave 3: Available October 12th, 2023 to October 19th, 2023
Wave 4: Available October 19th, 2023 to October 26th, 2023

Source: https://twitter.com/NintendoAmerica/status/1707847720826700039