Guitar Hero III60 encore this fall

RedOctane's Support Center has an interesting tidbit of information regarding the next installment of Guitar Hero, and it's release schedule. The PS2, PS3, Wii, and Xbox 360 can expect to be rocking out to a new set of songs to unlock in Guitar Hero III this Fall (for North America). This also will be Neversoft's first shot at the game, so it will interesting to see what direction they take the series, and if the pedal jack will be used or not. Do you think that this is too soon for the next game? Or is it justified as the PS2 release was back in November?