Guitar Hero: Metallica may still not be "officially" announced by Activision, but a tipster sent us a YouTube clip revealing the teaser for the game in Guitar Hero World Tour's "videos" section. Making this situation even more inane is that Metallica's drummer, Lars Ulrich, has been flapping his lips about why the band decided to go exclusive with Guitar Hero (hint: buckets of cash).

The YouTube video gives the game a nebulous release date of 2009, but a financial report from last June showed that the title is expected before March 31, 2009. The clip can be found after the break.

[Thanks, Ihateu3]

This article was originally published on Joystiq.

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