If you haven't seen it already, you might want to check out the new Guitar Hero Encore Rocks the 80's website. It just went live recently and offers a link to pre-order the game.
There isn't much to the site other than a splash page at the moment. The good news is that you can get a preview of the tracks that you'll be playing in the upcoming game. I'm still a little disappointed by the track list, but I'm hoping that they're saving the best ones for last.