I don't know if it is just me, but this game looks like it would appeal to these three groups:
1. Already experienced guitar players who don't need instant feedback to help develop muscle memory for chords;
2. People who want to use their own guitars for a game, which does sound cool. I don't see how they could possibly make it work accurately with the tech presented, but I guess we'll see;
3. The misinformed (ala Power Gig).
The whole thing just leaves a sour taste in my mouth. It almost seems like a shameless attempt at cash-grabbing on a current trend. All the information presented in the game seems like it could be done with online tabs and an mp3 player.