It's not just a rumor anymore, metal-heads. The official release date for Guitar Hero: Metallica has been announced. The game will be launching in North America on March 29 and will release in other regions sometime in May. So, start preparing your fingers for the inevitable calluses and start drinking all the Red Bull you can stomach, because Guitar Hero: Metallica is going to be hard. With 28 Mettalica tracks and plenty of guest artists, it's not a game for lightweights. No, you'll need to be a serious fake musician if you want to hang with the big boys. What you do with your fake groupies, well, that's up to you.