The stylus is out of the question for Guitar Hero DS.
We will "Absolutely love it." says Vicarious Visions
At this year’s Austin Game Developers conference a few details have been announced by Vicarious Visions design manager, Adrian Earle, on Guitar Hero DS.
The most important of which is the fact that Guitar Hero DS will not use a stylus and will in fact use a new peripheral.
The design has not yet been finalized, but sources were told that we would “absolutely love it."
Adrian also said that the graphical style of Guitar Hero DS would be consistent with the rest of the series.