In Pictures: WWDC keynote highlights

Apple unveiled an updated MacBook line, more Mountain Lion features, iOS 6, and a smarter Siri. Here are some photos and recaps of Monday's WWDC keynote.

Federighi introduces Power Nap

Another new Mountain Lion feature that will be exclusive to SSD-equipped Mac laptops: Power Nap works behind the scenes to keep your Mac up to date—syncing email, calendar appointments, notes, and reminders; updating Photo Stream; downloading app and OS updates; and backing up to a Time Machine drive—even when it’s sleeping.

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