I thought "Man on the Moon", "Invitation" and "Slumber Party" all were confirmed album tracks.
I guess we'll wait and see!
They are confirmed to have been recorded, but not to be on the tracklist. She has a ton of songs from past eras that were registered on PRO's but not placed on albums, so it's possible that they won't end up on the album.
Of all people she collaborated with Iggy Azalea. let's not act like she's too good for him. Boy can sing and has good to ocasionally great (WDTA) melodies.