Do tell us, Great Username. I wasn't aware that was a "thing" considering she and others have done that in the past. Maybe your memory isn't all too well.
It's not gonna be released. I mean Bey sung Dangerously In Love and that never saw the light of day as well as Katy's own "Not Like The Movies". I'm excited though this is the song that she'll be remembered for (performance wise) this era.