Update: Metallica has revealed the games full track list.

Original: Once again, new Guitar Hero: Metallica tracks are leaked, but not by a member of the press, or even a ‘source close to Activision’, the ESRB. Anyway, we know that the full track is, reportedly, coming next week, but this is to juicy to pass up on.

According to the ESRB’s description, Guitar Hero: Metallica features some potentially objectionable lyrics. Specifically in Social Distortion’s “Mommy’s Little Monster,” Metallica’s “Whiplash” and Diamond Head’s “Am I Evil?” which Metallica covered on 1984′s Garage Days Revisited.

In the description was also nice enough to point out ‘bad words’ in Michael Shenker Group’s “Armed and Ready,” a track already revealed by Game Informer magazine.

[More Guitar Hero: Metallica Tracks Revealed By ESRB via Kotaku]