Earlier today we reported that Apple would release new MacBook Air models this week, likely tomorrow, and that the refresh would likely focus on improved Intel Haswell processors. A source has just sent in the above image that confirms this refresh will revolve around new chipsets…

The above label represents the new entry-level 13-inch model, and the only noticeable change is that the computer will now have a 1.4GHz Intel Core i5 processor with Turbo Boost up to 2.7GHz. Today’s standard 13-inch MacBook Air comes with a 1.3GHz processor and Turbo Boost up to 2.6GHz.

This label also indicates that the design and weight of the MacBook Air will be retained for this refresh.

We’re expecting similarly small boosts across the standard MacBook Air lineup (with the built-to-order models moving from 1.7GHz to 1.8GHz), with not much else coming to the line until the Retina Display models ship later this year. Here’s the current array of MacBook Air specifications:

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