A firmware update gives some clues about new Apple hardware.
Apple is extremely secretive about its products. It has gone to great lengths to prevent news from leaking, even taking the unorthodox approach of killing leaks sites.
However, it can only keep secrets so long, as its firmware often reveals what loose lips do not. Apple Insider
noted today that the 625K update Mac OS X 10.5.7 for the MacBook Air contains firmware tweaks to the logic board that controls the power functions, thermal management, the sleep LED, and battery.
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Source: Dailytech