It's not like Apple could very well keep it a secret anymore, so today we're being treated to the official unveiling of the Magic Trackpad . This wireless touch input receptacle -- already thoroughly leaked trademarked , and FCC-approved -- has just made its debut in, of all places, Apple's Store app for iOS 4. It's basically exactly what you'd expect: a glass-covered, aluminum-shelled replicator of the glorious multitouch experience on offer in Apple's MacBooks, only for the desktop. The Trackpad is battery-powered , communicates via Bluetooth fairy dust, and is ready to ship out right this minute for a dollar under 70 bucks.