Apple has released MacBook Air and MacBook Pro Update 2.0 for all laptop models introduced in June 2012: both 13- and 15-inch sizes of the MacBook Pro, the MacBook Pro with Retina Display, and both the 11- and 13-inch versions of the MacBook Air. The minimal release notes say that this release “includes graphics performance and reliability enhancements and improves compatibility with some USB devices.” Requiring OS X 10.8.2 Mountain Lion, the update should appear in the App Store’s Updates screen for affected models, or you can download it directly from Apple’s Web site. If you have one of these models still running 10.7 Lion, it would seem that an upgrade to Mountain Lion would be the only way to take advantage of the update. (Free, 127.07 MB)
Springy Dock Tricks
If you drag a file and hover over Dock icons, various useful things happen which are similar to Finder springing. If it's a window, the window un-minimizes from the Dock. If it's a stack, the corresponding folder in the Finder opens. If it's the Finder, it brings the Finder to the foreground and opens a window if one doesn't exist already. But the coolest (and most hidden) springing trick is if you hover over an application and press the Space bar, the application comes to the foreground. This is great for things like grabbing a file from somewhere to drop into a Mail composition window that's otherwise hidden. Grab the file you want, hover over the Mail icon, press the Space bar, and Mail comes to the front for you to drop the file into the compose window. Be sure that Spring-Loaded Folders and Windows is enabled in the Finder Preferences window.
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MacBook Air and MacBook Pro Update 2.0
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After clicking Download on the Apple page http://support.apple.com/kb/DL1609 I receive an error.
Apple has pulled it.
I tried Software Update (a.k.a. MAS) on my new MacBook Air, and there is no sign of it there either.
I've opened a case to find out what happened to it.