Festival Republic boss Melvin Benn has explained that he wants to "add more music" to the festival, but plans to keep capacity at the same size.
"We're changing the arena at Reading and Leeds quite significantly," Benn told BBC Newsbeat. "I've got quite a strong buzz and feeling in myself in the changes that I'm making there.
"I'm still formulating the ideas. There will quite a bit more dance music, quite a bit more other bits and pieces."
Benn also confirmed that he plans to unveil the first headline act for Reading and Leeds Festival before Christmas.
Foo Fighters, Kasabian and The Cure headlined Reading and Leeds Festival 2012, with further sets from Florence + the Machine and Azealia Banks, and a surprise performance from Green Day.
Watch Foo Fighters perform 'Best of You' at Reading Festival 2012 below: