Rage at 60fps. At QuakeCon, John Carmack of id showed off a demo of Rage running at 60 frames per second on an iPhone 4. MacRumors has a nice video of it running.
Liquidmetal may be used as antenna. The co-inventor of the metal alloy marketed as Liquidmetal says that Apple would be able to use the alloy as an antenna. Cult of Mac has the exclusive interview with Dr Atakan Peker. Earlier this week, Apple made headlines when it obtained the worldwide exclusive rights to use the Liquidmetal's IP in consumer electronics. Check out this cool video demonstrating one of the properties of the alloy.