Steve suggests showing a prototype, but don't spend too much time on it, either -- you could be building the wrong thing.
Just focus on the kind of stuff that Apple would actually put in a marketing campaign -- the 1-3 "major" features that would actually make someone buy. Customers will assume you'll add all the boring "required" stuff anyway.
Just focus on the kind of stuff that Apple would actually put in a marketing campaign -- the 1-3 "major" features that would actually make someone buy. Customers will assume you'll add all the boring "required" stuff anyway.