A recent SEC filing by Activision has revealed that the publisher is planning on releasing a new title in the Guitar Hero franchise based on legendary heavy metal group, Metallica.

Unearthed by Wedbush Morgan securities analyst, Edward Woo, the filing disclosed plans to release the upcoming music simulation title in Q1 2009.

"In fiscal 2009, we plan to publish Guitar Hero: On Tour for the NDS; Guitar Hero: Aerosmith, Guitar Hero: Metallica, and Guitar Hero IV across multiple platforms," Activision stated in its report.

The publisher's fiscal year ends on March 31, 2009, indicating that the game will likely show up not long after the holiday release of Guitar Hero: World Tour.

Guitar Hero: Metallica will mark the second title in the series based solely on one group, the other being the forthcoming summer release of Guitar Hero: Aerosmith, due out on PlayStation 3, PlayStation 2, PC, Xbox 360 and Wii.

Stay tuned for more information on Guitar Hero: Metallica as it becomes available.