The official Japanese Pokémon website has announced that for those that pre-order the upcoming New Nintendo 3DS LL Solgaleo/Lunala (Black) or the New Nintendo 3DS LL Pikachu (Yellow), they will receive a serial code to unlock a theme which has been designed to suit each version. The New Nintendo 3DS LL Solgaleo/Lunala will feature a theme with Solgaleo and Lunala while the New Nintendo 3DS LL Pikachu will feature a theme with Pikachu.


Both Nintendo 3DS LL systems are available for pre-order starting on July 16th, 2016. Those that pre-order either system will receive a serial code to unlock a theme for the respective version which will be valid to use from November 18th, 2016 until November 30th, 2017.


Source: http://www.pokemon.co.jp/info/2016/07/160715_cm03.html