Yet another Pokémon product is coming to Good Smile Company’s Nendoroid line. A Nendoroid More: Pokémon Face Parts Case (Pikachu) has been announced. It will be released in December 2017. (Thanks, Japanese Nintendo!)
The Nendoroid More: Pokémon Face Parts Case (Pikachu) will cost ¥1,111 (~$9.80). It allows people to take a spare Nendoroid face and display it. It then looks as though the Nendoroid is wearing a Pikachu costume. All standard Nendoroid face plates are compatible. (Ones like the Persona 4 Teddie and Persona 5 Morgana will not work with the case.)
The Nendoroid More: Pokémon Face Parts Case (Pikachu) page notes that this is a tie-in with the upcoming Pokémon the Movie 20: I Choose You. The Ash & Pikachu Nendoroid is also connected to the movie.