The new MacBook Air will upgrade the processor to SandyBridge.
Most likely the Core i Sandy Bridge processor on the new MacBook Air will be a low-voltage type that will increase battery life and produce less heat. This is an upgrade that many current MacBook Air users wait for. However, it is likely that this model will have almost no change in addition to the Thunderbolt connector.
In a speech at the recent Apple developer conference, WWDC 2011, Phil Schiller, Apple's senior vice president of product marketing, said the success of MacBook Air was the key to growth. Its fast in the computer market in the first half of the year."Apple" has sold about a million MacBook Air machines in the first quarter of this year.