Last year, Nintendo announced that Mario Kart will be coming to mobile. It was announced to be released on May 2019 but it got set back to Summer 2019. A closed beta test for the game was conducted on May 22 to Jun 4. Ever since the closed beta test was opened as expected, tons of details of the gameplay has been unleashed to the internet.
Today, Nintendo announced that Mario Kart will launch on September 25th. They recently just launched official English and Japanese twitter account to celebrate the launching for Mario Kart Tour. Currently, you can pre-register for the game in iOS and Android. Head out to their official website too while you are at it!