The singer said that she will finish her Teenage Dream album campaign "soon" after the release of the deluxe Complete Confection edition, and is keen to get back into the studio.
"Obviously I'm going to close this chapter soon," she told MTV. "I am ready to make a new record and maybe try another approach artistically, and I will close the book on Teenage Dream soon, but Complete Confection just felt really organic.
"I'm doing it mostly for the hardcore fans, because they always love all the extras. And also, I couldn't put more than 12 songs on the original Teenage Dream, and I had written more songs. I finally wanted to incorporate them."
Perry also described her songwriting process as "therapeutic", adding: "I'm kind of one of those people who is a bit emotion-less on the outside, especially in public, but what I do is I store it, and I file it, so when I need to write I can just push that button."
On the sound of her next LP, she revealed: "I've always just been me and my guitar; and I'm not saying I'm going to make that record, but I do want to get back to my roots. I've been changing my hair colour too much!"
The star recently admitted that she knew her new single 'Part of Me' was "special".
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Listen to Perry's new single 'Part of Me' below: