Coders plunge into the iOS 4.3 firmware Apple has released ahead of its iPad 2 launch Friday. Coders found clues that the iPhone 5 will sport the same dual-core A5 processor as the new Apple tablet computer. Such a move by Apple would be consistent with the evolution of the iPhone and iPad lines up until now. The A5 chip, based on an ARM design, features two cores running at 1GHz versus a single 1Ghz core in the A4 processor in the first iPad and the iPhone 4.”]