One of the main new features of OS X Mountain Lion is Power Nap. Power Nap allows your SSD Mac to keep itself updated and synced to the cloud, even while it sleeps. While its a highly-touted feature of Mountain Lion, support for the 2011 and 2012 MacBook Air and the new MacBook Pro with Retina display was left out. Today, Apple released a download that enables Power Nap for the aforementioned MacBook Air units, with the promise that an additional download that'll enable the feature on the MacBook Pro with Retina display is "coming soon." You can get Mountain Lion now for $19.99 on the Mac App Store.
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Apple has revealed the new MacBook Air line during its WWDC 2012 keynote. The refreshed notebooks will feature Ivy Bridge processors that go up to 2.0GHz with the dual-core i7, and Turbo Boost up to 3.2GHz. The 11-inch model starts at $999 and includes a 1.7 GHz processor, 4GB RAM, and 64GB flash storage. For $100 more you double storage to 128GB. This is a bit cheaper than it was just a few hours ago. The 13-inch model gets a 1.8GHz dual-core i5 processor, 4GB RAM, and 128GB flash storage for $1199. $300 more gets you 256GB storage. There are options for more storage and more RAM as well. All models now ship with USB 3.0 as well. The new MacBook Air ships today, and you can order it from the Apple Store.