The official Pocket Monsters anime PR Twitter posted an announcement that due to the COVID-19 issue becoming larger problem in Japan, production of the anime has come to a halt and that all new episodes are being delayed starting with PM 2019 episode 23 which was originally scheduled to air on Sunday, April 26th, 2020. Repeat episodes of Pocket Monsters will now air in the time slot until further notice. Our list of COVID-19 canceled Pokémon Events has been updated with this announcement.

An announcement from the show

In an effort to create a safe environment for the show's production as the number of novel coronavirus infections increases, and with the state of emergency declaration in effect, parts of the show's production will go on temporary hiatus. As a result, Pocket Monsters will begin airing repeats starting with next week's broadcast.

＜番 組からのお知らせ＞
新型コロナウイルスの感染拡大にともなう「緊急事態宣言」の発出を受け、 安全に十分配慮した上での番組制作を行うため、 一時的に、一部の制作作業を見合わせることにいたしました。 これに伴い、来週以降の「ポケットモンスター」は再放送となります。

Source: https://twitter.com/anipoke_PR/status/1251805236231954435