Hello, readers. Lara O'Reilly, a senior correspondent on the advertising team in London, here.The Nerd Helmet, as coined by The Wall Street Journal's Joanna Stern, has arrived! Apple on Monday unveiled its first hardware release in almost a decade: The $3,499 Vision Pro mixed-reality headset.The launch sees Apple go head-to-head — or should I say headset-to-headset — with Meta.