The "Shake It Off" and "Bad Blood" singer, who has won 11 Grammys during her career, also revealed on Instagram overnight that she was releasing seven additional songs that did not make it onto the new record.
Initial reviews from critics were positive.
"Her tenth album returns to the dazzling synth-pop of records like '1989' and 'Reputation,' with lyrics caught between a love story and a revenge plot," Rolling Stone magazine said.
In the Los Angeles Times, pop music critic Mikael Wood said the "Midnights" album "heralds the return of a pop music mastermind."
