Activision just released this teaser trailer for one of their soon-to-be-released games. The teaser is purposefully mysterious as it doesn't specify a game title, but after watching it we're leaning towards a new game from the Guitar Hero franchise. It's been almost five years since the last Guitar Hero game came out. The last title released was Guitar Hero: Warriors of Rock, and it sold only a disappointing 86,000 units in its first week. Is five years too long of a lapse for the game to win back its former cult status?