The cover isn't official actually. I mean, I can't confirm that. But why would the cover say What You Want to Do on it when the song is called Night Is Young.
Take that up with Universal Music. I have also received that cover on the official mailout from the record company on PlayMPE. I highly doubt much effort would be put into this release since it's for a Greatest Hits.
Just look at the covers for the Glee songs on iTunes (that's arent't off the EPs).
I Hope The video will be extravagant, at least should be at the same level as Promiscuos, It Screams Club Banger. Club Will Eat this song. DJ's gonna run to this song.