The first major gaming-related feature revealed today: what Apple is calling a "Retina Display." No, it doesn't scan your retina -- it's Apple's jargon for the iPhone 4's screen having four times the pixel density as the iPhone 3GS, or 326 pixels-per-inch. That's also 78 percent of the pixel resolution of the iPad's display. Jobs said that existing apps and games will instantly look better, but can be optimized for the screen.
We'll continue updating this post as more is announced.
Update: The handset is powered by Apple's own A4 processor, the same used by the iPad. In addition to GPS, a compass and accelerometers, the iPhone 4G is adding a gyroscope, providing full pitch/roll/yaw sensing in 3D space. "We've tied the gyro, accelerometer, and GPS for 6-axis motion sensing. It's perfect for gaming - and one of the reasons it's perfect is because it's built into every iPhone 4, so you know it's there," Jobs explained. He demoed the functionality with a Jenga type game.
