i've seen the $25 voucher at best buy mentioned here, but i saw today now that guitar center is doing the same thing.
however the game itself actually stacks up, one thing is for sure: they definitely beat RB when it comes to promotion.
If enough of the fans complain about the auto difficulty system, there's a strong chance they'll patch it to make it optional. Or at least they will if they want to keep their customers all happy. It's probably too late for them to change it for launch.
Suggest you can do this over at their FB site as they have Q&A sessions with fans/potential buyers and seem to be receptive to comments/suggestions:
Havent seen this vid yet before but adds some interesting concepts they are using (unlock pedal tones)
I;m really looking forward to this game, but I have a wii... Any news on when that PC version is being released?
Even in that video, they're being as misleading as they can get away with by implying Guitar Hero is their main/only competitor and then downplaying Rock Band by saying you don't need a "MIDI connector or anything like that" to play Rocksmith.