Ars Technica posted a review on the 2012 MacBook Air

Another year, another MacBook Air. Apple's lightweight machine has come a long way since it was first released in 2008. At last week's 2012 Worldwide Developers Conference, Apple updated it once again alongside a plethora of MacBook Pro updates. Like the MacBook Pro, the newest MacBook Air received a bump to Intel's latest Ivy Bridge CPUs and saw updates to its graphics capabilities, USB speeds, and more.

But unlike the fancy new MacBook Pro with retina display, the MacBook Air did not get much of a design makeover. In fact, the 2012 MacBook Air looks practically identical to its last few predecessors. This was not a revolutionary upgrade to the MacBook Air—rather, it was an incremental, evolutionary one.

  Review: The 2012 MacBook Air soars with Ivy Bridge