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Slayer is back in the studio.  The metal legends announced their return by tweeting the hashtag "Slayer Album 15" and a picture of the back of guitarist Kerry King's tattooed head. 

Slayer hopes to have the follow-up to 2009's World Painted Blood in stores early next year.  The album will include the track "Implode," which the group made available to fans as a free download earlier this year. 

The release will be Slayer's first since the death of guitarist Jeff Hanneman and the departure of drummer Lombardo. 

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