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Power Nap Keeps Mountain Lion Current While it Sleeps

Apple has just unveiled Power Nap for Mountain Lion. Power Nap refreshes and backs up data while your Mac is in sleep mode. Apple claims the Power Nap is efficient enough to have a negligible impact on battery life.

You can read Eric’s in depth preview of Mountain Lion here, and don’t forget to check out the rest of our WWDC coverage on the front page.