^Ghost is E.T. 2.0, Dark Horse can be California Gurls 2.0.
She probably mentioned something about it having a radio premier on Tuesday before the iTunes release
and the writer mistook it for her saying it was being released to radio on Tuesday. There's no way that it's actually being released.
Katy's team is smarter than this, no? Putting out a single would mix things up and take away from Roar, which is a massive hit. Surely if DH is the next single, which she hasn't confirmed, they'll wait for Roar to die down.