Firmware update for MacBook Air adds Power Nap, fixes

Even though Power Nap was one of the features Apple talked about post-release of their next-gen OS Mountain Lion, which was released two days ago now, it was missing from the release itself.
PowerNap allows the system to save energy by maintaining Sleep mode but still allow the system network access for updates and synchronization, as well as allowing backups to happen in the background. This feature is only available on the 2011-2012 MacBook Air systems and in the MacBook Pro with Retina Display; however, these systems did require a firmware update to use the new feature.............
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