RedOctane said they had plans to release some specialized editions of Guitar Hero back in March. They gave a few examples including country, rock, and metal, but they never said anything about 80's! The latest issue of EGM has some info about Guitar Hero: 80's Edition for the PS2, which has a spring release date but somehow remains officially announced. EGM said, "trust us, it's coming."
1UP hopes and I suspect that the content will be available for Xbox 360 as Marketplace downloads. Earlier this week, RedOctane announced that the Xbox 360 would receive Marketplace content, but did not specify just what those downloads would contain.
[Guitar Hero 80's, Half-Life 2: Orange in New EGM @ 1UP]

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