A booth featuring Pokémon GO will be showcased at Game Party Japan 2017, with an actual PokéStop on display where visitors can take pictures. There will also be a time-limited in-game PokéStop. There won’t, however, be any special or rare Pokémon that will be spawning during the event. The Game Party Japan is an annual event entirely dedicated to video games. It is held by NicoNico and Dwango – the company responsible for operating the Japanese service.
Source: Japanese Nintendo