backwards compatible guitars (Score 1)

The buttons on the fret board have gone back to the rounded shape first used on the PS2 Guitar Hero controller. They still have the same color layout, but now have a mostly black face to make the controller look less like a toy and more like a real axe

It looks like the old wired guitar will work with the new game. Phew! I had heard rumors that the button scheme would be different and I would therefore need 2 sets of toy guitars. The profit margin on selling more copies of the game is so much larger that selling more wireless controllers, that they wouldn't want to discourage people from buying GHIII.

Or did I misunderstand something?