For a product that seems to dominate most everything Apple does these days, the iPhone was curiously absent from Tuesday’s Macworld Expo keynote by Apple senior vice president of worldwide product marketing Phil Schiller—at least until the end. In unveiling new information about the iTunes Store—variable pricing for music tracks that will now be entirely free of digital-rights management restrictions—Schiller also dropped some intel about the iTunes Wi-Fi Store. Namely, that it’s not the Wi-Fi Store anymore: you can now buy and download music tracks across a 3G network as well.