'Surprise' on tomorrow's show...
 

...according to the Official X Factor Twitter.

http://twitter.com/TheXFactor/status/29221039292

I bet it's Jedward doing Ghostbusters.

It is Ozzy and Sharon

It's Jedward.

I hope it's Jedward :')

There was the rumours about Jedward then it went quiet all of a sudden;).

Good God. Might of known theyd sneek them back on at some point. Gotta help louis out plugging their music..not that anybodies interested.

Seriously, they need to just quit trying to be popstars as they will only lose money.

Hope not.