Oops, she's going to do it again! Britney Spears tweeted about her upcoming new album, revealing that it's not what most fans would expect. 

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"Really excited 2 give u a taste of my new album…can't wait 2 share what I've been working on," the former X Factor judge wrote on July 3. "Going to be my most personal album ever" she added with a smiley face.

The 31-year-old singer's upcoming album, which will.i.am is executive producer of, is tentatively due for the end of the year.

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Of the news that the record -- which will be Spears' eighth album -- was voted "the most anticipated event of 2013" by Billboard.com's annual mid-year poll, the mom of two tweeted she was feeling "a lot of pressure."

Pressure aside, the blonde beauty is hard at work perfecting the much-awaited record. "It's definitely at the beginning stages right now," she said of the recording process while talking to Ryan Seacrest on June 17. "But I want to definitely take this album and have a new approach with it and make it a little different than anything I've ever done." 

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Spears' last album was 2011's Femme Fatale. She last premiered her new song "Ooh La La" from the Smurfs 2 soundtrack on June 17.

This article originally appeared on Usmagazine.com: Britney Spears: I'm Working on "My Most Personal Album Ever"