7-Eleven Japan has announced that as of Sunday, October 31st, 2021, their collaboration with Pokémon GO will come to an end. As a result, all PokéStops at 7-Eleven stores will be closed and are scheduled to be removed by early morning on November 1st, 2021. This will affect upwards of 20,000 PokéStops in Japan. The partnership has been ongoing for about 4 years.

Source: https://www.sej.co.jp/services/pokestop.html