Britney Spears says next CD will be her 'most personal' ever

LOS ANGELES, July 5 (UPI) -- U.S. pop star Britney Spears said via Twitter her upcoming eighth album will be her "most personal" project to date.

The as-yet-untitled CD is due out at the end of this year. Black Eyed Peas star will.i.am is producing the collection of new songs.

"Really excited 2 give u a taste of my new album...can't wait 2 share what I've been working on," Spears tweeted Wednesday. "Going to be my most personal album ever."