The former X Factor winner told Metro that her delayed record Glassheart has lots of "different flavours".
"At the moment I'm just finishing up my album so I'm hoping it will be out in the summer," Lewis said.
"I've got a track that's got a bit of drum 'n' bass at the end. It's quite different to what I've had out before."
She added: "I've got a track that's very '90s. It's just different influences that I've had through my life growing up.
"I'm really actually looking forward to people hearing it."
Glassheart was originally set for a November 2011 release before being delayed until March 2012.
Despite the star suggesting a summer launch, online retailer Amazon has posted a November 26 release date.
Lewis will appear as a guest judge at The X Factor auditions this afternoon (May 29) after her previous guest slot on Saturday.
Watch Leona Lewis perform 'Hurt' acoustic below: