I would add to this that in addition to differentiating features that would surface on a PRD, the quality of these features is critical. Having capacitative mu

I would add to this that in addition to differentiating features that would surface on a PRD, the quality of these features is critical. Having capacitative multitouch is one thing, but having a quality touch screen is another. It is easy to lose sight of how much black-magic goes into making a usable capacitative muti-touch screen.