The highlight of the new generation Airs is the battery life, with the 11-inch models capable of up to 9 hours backup, and the 13-inch MacBook Airs boasting an incredible 12 hours of battery life. All models are now powered by fourth-generation 1.3GHz dual-core Intel Core i5 (Turbo Boost up to 2.6GHz) with 3MB shared L3 cache alongside 4GB RAM,...