Does Apple Inc. have its next blowout product on its hands?You might think so, based on early order trends for the $3,499 Vision Pro headset. Apple AAPL, +0.53% opened up online preorders for the mixed-reality device earlier Friday, and they seem to be flying off virtual shelves, based on quoted delivery times. While Apple fans can preorder the Vision Pro headset today, they won’t be able to get them until Feb. 2 at the earliest. And while some of the first shoppers may be getting their devices then, those ...