This is how the 6th single should be managed:
October 6th: Katy tweets "we could be legendary.." to imply it's the next single.
October 10th: Katy tweets "#LegendaryLovers"
October 12th: Katy sends Legendary Lovers to US radio stations.
October 17th: Katy tweets "trend #LegendaryLovers and I'll reval the artwork for my next and final single "Legendary Lovers"!". When it trends, she will post the artwork.
October 20th: Katy uploads "Legendary Lovers (official audio)" on her Vevo channel.
October 31th: Katy sends Legendary Lovers to radio stations worldwide
November 1st: Katy uploads "Legendary Lovers (Lyric Video)" on Vevo
November 5th: Katy posts "Legendary Lovers (Empire of the Sun Remix)" on her soundcloud and vevo channel.
November 10th: Katy announces the music video, and posts a promotion poster.
*The AMAs are around this time right? she can perform there, couldn't she?
November 12th: Katy posts "Legendary Lovers (Zedd Remix)" on her soundcloud and vevo channel.
November 15th: Katy uploads "Legendary Lovers (video teaser #1)" on her Vevo channel. (a few seconds teaser)
November 17th: Katy uploads "Legendary Lovers (video teaser #2)" on her Vevo channel.
November 19th: Katy uploads "Legendary Lovers (video teaser #3)" on her Vevo channel.
November 20th: Katy uploads "Legendary Lovers (Official Video)" on her Vevo channel.
November 21st: Katy puts #LegendaryLovers posters all over America like she did with TIHWD
November 31th: Katy uploads "Legendary Lovers ft.
Harry Styles T.I. (the remix)

" on her Soundcloud, and Vevo.
December 2nd: Katy releases a remix e.p. on iTunes
goes #1 on Billboard.
December 31st: Katy uploads "The Prismatic Megasix Smash-up" on Vevo

/end era