The X Factor - Longest Show Ever

Are you prepared to sit and watch X Factor for 2 and a half hours? 

On October 9th, ITV will air 2 and a half hour of X Factor as the 12 finalists sing in the first live show to gain a place in the next show. This will be longest episode in the history of X Factor. A spokesman for ITV has said the length of the episode is because of a 'surprise' to the viewers. 

Can you handle this much X Factor? What will the surprise be? I'm just a bit excited to be honest.