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Katy Perry is giving fans more of a taste of her new album.  On Tuesday, she unveiled a 30-second clip of a new song called "Dark Horse," featuring Juicy J.  

Katy is not planning on releasing "Dark Horse" as an official single off her new album,Prism. The clip was released as a part of her Pepsi-sponsored promotion during the VMAs last month. 

But the singer let fans know on Twitter that on September 30th, she'll be revealing another 30 seconds of Prism, with a clip of a new song called "Walking On Air."  The album is set to drop on October 22nd.  Katy says her follow-up to "Roar" won't be released "for some time." 

Meantime, "Roar" is reaching new heights on the "Billboard" charts.  The single has topped the Streaming Songs chart this week, ending the seven-week reign by Avicii's "Wake Me Up." 

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