A source told The Sun newspaper's Bizarre column: "Katy has been working on her most personal album ever for much of the past two years.
“She has been doing it on her own terms and it is quite different from anything she has released before."
Katy also intends to go on a world tour in support of the record, the first time she has been on the road since 'Witness: The Tour' which ran from 2017 to 2018.
For the past two years, the 'Roar' hitmaker has been performing her 'Play' Las Vegas concert residency at the Resorts World Theatre but now she is ready to take her songs around the globe to her fans.
The source added: "But after so long spent on the West Coast of the US, she feels ready to tour again.